8. Fish make use of _______ exchange in their gills. a. cross-current b. concurrent c. cocurrent d. countercurrent

Answers

Answer 1

Answer:

Countercurrent

Explanation:

I think it's the answer

Answer 2

Answer:

d. countercurrent

Explanation:

im pretty sure this the answer so i hope this helps bro/broette bye


Related Questions

How does energy balance contribute to a healthier lifestyle?

Answers

Answer:

"People who are more physically active burn more calories than those who are not as physically active. Your ENERGY IN and OUT don't have to balance every day. It's having a balance over time that will help you stay at a healthy weight for the long term."

Credits to : nhlbi

Explanation:

Answer:

Energy balance is a way of living, eating, and exercising, that facilitates a healthy balance of calories against activity that is conducive to overall good health. An important feature of energy balance is that the balance we maintain can change over time

Explanation:

Have a good day/night

How do El Niño and La Niña differ?

Answers

Answer:

El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.

Explanation:

What is the first indication of a Tsunami?

Answers

GROUND SHAKING, a LOUD OCEAN ROAR, or the WATER RECEDING UNUSUALLY FAR exposing the sea floor are all nature's warnings that a tsunami may be coming.

Answer:

Ground shaking or loud ocean roar

SOMEONE PLEASE HELP ME!!!!!!!

In a phrase, tell me what each scientist did to help develop the cell theory.

Scientists: Hooke, Leeuwenhoek,
Schleiden, Schwann, and Virchow

Answers

hooke- first to visualize a microorganism

leeuwenhoek- first to observe bacteria and protozoa(single celled organisms)

schleiden- said all plants tissues are composed of cells and that every other cell came from 1 single cell

schwann- concluded all tissues are made of cells

virchow- all cells come from preexisting cells

the folded organelle just outside of the nucleus that is covered in ribosomes and plays a role in protein synthesis is called the:

Answers

Answer:

endoplasmic reticulum (ER)

Explanation:

can someone please give me the answer i don't know which one it is?

Answers

Answer:

Sea levels near the arctic rise

Explanation:

How does your body respond to an increase in the waste products of energy production

Answers

Answer:

Energy is delivered to the body through the foods we eat and liquids we drink. Foods contain a lot of stored chemical energy; when you eat, your body breaks down these foods into smaller components and absorbs them to use as fuel. Energy comes from the three main nutrients carbohydrates, protein, and fats, with carbohydrates being the most important energy source. In cases where carbohydrates have been depleted, the body can utilise protein and fats for energy. Your metabolism is the chemical reactions in the body’s cells that change this food into energy.

Most of the energy the body needs is for being at rest, known as the Basal Metabolism. This is the minimum amount of energy the body requires to maintain its vital functions such as breathing, circulation and organ functions. The rate at which energy is utilised for such functions is known as the Basal Metabolic Rate (BMR) and varies based on genetics, sex, age, height and weight. Your BMR drops as you get older because muscle mass decreases.

Optimal energy metabolism requires getting sufficient nutrients from our foods, otherwise our energy metabolism underperforms and we feel tired and sluggish. All foods give you energy and some foods in particular help increase your energy levels, such as bananas (excellent source of carbohydrates, potassium and vitamin B6), fatty fish like salmon or tuna (good source of protein, fatty acids and B vitamins), brown rice (source of fibre, vitamins and minerals), and eggs (source of protein). There are actually many foods that provide an abundant amount of energy, particularly those packed with carbohydrates for available energy, fibre or protein for a slow release of energy and essential vitamins, minerals and antioxidants.

Foods are metabolised at a cellular level to make ATP (Adenosine Triphosphate)

by a process known as cellular respiration. It is this chemical ATP that the cell uses for energy for many cellular processes including muscle contraction and cell division. This process requires oxygen and is called aerobic respiration.

 

            Glucose + Oxygen → Carbon dioxide + Water + Energy (as ATP)

 

Initially, large food macromolecules are broken down by enzymes into simple subunits in the process known as digestion. Proteins are broken down into amino acids, polysaccharides into sugars, and fats into fatty acids and glycerol—through the action of specific enzymes. Following this process, the smaller subunit molecules then have to enter the cells of the body. They firstly enter the cytosol (the aqueous part of the cytoplasm of a cell) where the cellular respiration process begins.

Hope this helps. ;-]

Explanation:

what part of the brain is responsible for happiness

Answers

the limbic cortex. Another area called the precuneus also plays a role.

what is the natural rate of nitrogen fixation in earth’s ecosystems?

Answers

Answer:

A reasonable upper bound for the rate of natural nitrogen fixation on land is thus about 140 Tg of N per year.

What is not a type of arrythmia?

ventricular flutter
atrial flutter
atrial fibrillation
ventricular tachycardia

Answers

Given what we know about anatomy, we can confirm that atrial flutter is the option listed that may not be considered an arrhythmia.

What is an arrhythmia?An arrhythmia is classified as an irregular beating of the heart. What this means is that the heart will beat at rhythms different from the normal. A normal heartbeat can increase or decrease in speed, but as long as the beating follows a regular rhythm it is not considered an arrhythmiaThe atrial flutter can cause the heart to beat much faster than normal but maintains a regularity.

Therefore, since the atrial flutter causes the heart to beat very fast, but maintains a regularity to it, we can confirm that this is not a type of arrhythmia given that an arrhythmia is classified as an irregular beating of the heart.

To learn more about the human heart visit:

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Why is it important for cells to be able to
take in nutrients and excrete (remove) waste
products?

Answers

Answer:

so that our body won't contain all the bad waste and allow all the good nutrients to help out our body.

The body of an organism utilizes the nutrient and the energy derived from the food.

The digestive system of an organism is accountable for breaking, digesting, absorbing and assimilating food.

The cells in our body perform biochemical reactions in which some of the substances are harmful or fatal to the body cells if gets stashed.

The method by which the excrement from the body is thrown out is called excretion.

So, for the appropriate functioning and for the cell to sustain discarding of wastes is required.

To learn more about excretion follow the link:

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1. Did the overall population of thr villages increase decrease or remain constant?
2. Did evolution (change in genotype frequency) occur in this population?
3.which genotypes(s) was selected for by natural selection?
4. Which genotypes(s) was selected against by natural selection?
5. Which genotype remained the lowest portion of the population? Why did this percentage remain so low?

Answers

Answer: remain constant

2 no

3. 1 2 and 4

4. 4 just 4

5. it remained low because EOF natural selection

Que derivados del petróleo se utilizan en la fabricación de materiales deportivos?

Answers

Answer:

Explanation:

*Which statement best explains the main conflict and resolution in "How a Cat Played Robinson Crusoe"?

The cat is abandoned on an island. She adapts to the wilderness and survives until her family returns.

The family worries about the cat. They are overjoyed to discover that the cat is alive when they return.

The cat faces many adversaries, including rats and owls. However, she persists and is able to overcome each.

The cat learns how to hunt. She does not starve to death on the island.

The purpose of the light-dependent reactions of photosynthesis is to -

a
split water to form oxygen
b
produce sugars
c
join glucose molecules to form starch
d
uses energy molecules like ATP

Answers

I think the correct answer is B.

What is the key to natural selection

Successful reproduction a
Inherited traits b
Genetic mutations c
Genetic vartiations d


Someone pls help me with this

Answers

Inherited traits

Reason they get use to their environment

can someone help me with this question

Answers

Explanation:

First row (left)

SS

smooth pod shape

First row (right)

Ss

smooth pod shape

Second row (left)

Ss

smooth pod shape

Second row (right)

ss

constricted pod shape

What are the different variations of genes called?

Answers

Answer:

Alleles :)

Explanation:

____________________________ is characterized by constant worry over minor and catastrophic events. Other complaints, such as muscle tension, fatigue, and irritability are also common.

Answers

Generalized anxiety is characterized by constant worry over minor and catastrophic events. It involves persistent concern about different issues.

Generalized Anxiety is a mental disorder associated with persistent concern about different issues.

The issues that may cause generalized anxiety may be, among others, money, family, work and health.

In addition, this mental disorder (generalized anxiety) is accompanied by a series of physical signs such as constant muscle tension and fatigue.

Learn more in:

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there are many kinds of organisms in kingdom protista. which organism is in kingdom protista?

Answers

Protist contains eukaryotic organisms wIth unicellular and simple multicellular organisms. These are mostly aquatic. This kingdom contains diverse group of organisms Eg: Animal like protist called protozoa i.e amoeba, Plant like protists called algae i.e euglena, and fungi like protists i.e slime molds

A genetics student is studying a plant that seems to have two Mendelian traits, flower color (red is dominant, and yellow is recessive) and seed color (brown is dominant, and green is recessive).

Use the Table button to create a Punnet square. Your Punnet square should show the possible offspring from one parent that is homologous recessive for both traits and the other parent that is heterogeneous for both traits. For flower color, use F and f, and for seed color, use S and s.

Then, based on the Punnet square you made, answer this question: What are the chances that the offspring will have the red flower, green seed phenotype? Show your work.

Answers

Answer:

Here is the plato answer !!!

   FS         fs       Fs       fS

fs FfSs    ffss     Ffss     ffSs

fs  FfSs    ffss     Ffss     ffSs

fs  FfSs    ffss     Ffss     ffSs

fs  FfSs    ffss     Ffss     ffSs

According to the Punnett square, 4/16       plants will have red flowers and green seeds.

So, (4 ÷16) × 100 = 25% chance of obtaining offspring with red flower and green seed.

Explanation: It's 100% right.

Answer:

The answer is in the picture.

Hope this helps!

Explanation:

What is most responsible for the presence of groundwater in an area?

Answers

Answer:

precipitation

Explanation:

need the answer right now
carbon dioxide or carbon monoxide is a compound whose molecules consist of one atom of carbon and two atoms of oxygen

Answers

Answer:

Carbon dioxide is a compound whose molecules consist of one atom of carbon and two atoms of oxygen. Check out the picture!

Explanation:

Carbon monoxide consists of one atom of carbon and one atom of oxygen, instead.

.・。.・゜✭・have a nice day・✫・゜・。

heat moves through the atmosphere through the process of ?

Answers

The answer is Conduction

Answer:

Heat moves through the atmosphere through the process of Conduction.

Explanation:

Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface.

ill give brainlietst and 50 points
Drag each tile to the correct location on the chart.
Determine whether each statement describes mitosis, meiosis, or both mitosis and meiosis.

Answers

Answer:

DNA replicates in both mitosis and meiosis, Mitosis occurs during growth and development, In meiosis the number of chromosomes reduce by half, Mitosis occurs in all organisms, Meiosis occurs in organisms that sexually reproduce, and chromosomes stay the same in Mitosis.

Explanation:

Mitosis: Occurs during growth and development, Occurs in all organisms, and The number of chromosomes remains the same

Meosis: The number of chromosomes reduces by half, and Occurs in organisms that sexually reproduce

Both: The DNA is replicated.

1. The DNA is replicated: Both Mitosis and Meiosis. In both processes, DNA replication occurs before the division of cells, ensuring that each daughter cell receives a complete set of genetic information.

2. Occurs during growth and development: Mitosis is the process responsible for the growth, repair, and development of multicellular organisms by producing identical daughter cells.

3. The number of chromosomes reduces by half: Meiosis involves two divisions that result in the reduction of chromosome number by half, leading to the formation of gametes (sperm and egg cells) with half the usual number of chromosomes.

4. Occurs in all organisms: Mitosis is a fundamental process occurring in various organisms, ranging from unicellular to multicellular, for growth, tissue maintenance, and asexual reproduction.

5. The number of chromosomes remains the same: In mitosis, the daughter cells have the same number of chromosomes as the parent cell, maintaining the chromosome count.

6. Occurs in organisms that sexually reproduce: Meiosis is specific to organisms that reproduce sexually, as it produces genetically diverse gametes that contribute to the variability of offspring.

Know more about chromosomes:

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help me please it's hard ​

Answers

Answer:

4. predator

5. prey

6. interspecific

Answer:

predator, prey,  intraspecific

Explanation:

HELPPPPP!!!!!
The following are true of DDAVP or desmopressin except
D. it helps to stimulate the urinary bladder to produce more urine.

C. it is administered by injection

A. it is a form of vasopressin

B. it is used to take the place of ADH

Answers

Answer:

i think its B

Explanation:

11 Apply If you have a cold that causes congestion in your sinuses, how
might that affect your sense of smell? Support your claim with evidence.

Answers

Answer:

If there's a blockage of this channel, like when you have a stuffy nose due to the flu or a cold, odors can't get to the sensory cells the smells stimulate. This results in you losing a lot of your ability to taste the flavor of food. In this manner, your senses of taste and smell work closely together.

Answer:

It will affect your smell because you can have a lot of snot in your nose and your nose will be stopped up with all that stuff.

What is the product of this equation?
2502 + 02 › 2503

Answers

2504 > 2503. just add the first part and rewrite the equation

Which equation represents the photosynthesis process?
a
CO2 + Glucose ----> H2O + Sunlight + O2

b
CO2 + H2O + Sunlight ----> Glucose + O2

c
CO2 + H2O ----> Glucose + O2

d
Glucose ----> CO2 + Alcohol + ATP

Answers

Answer: B

Explanation:

................

QUESTION 1 What technique allows you to cut hair very close to the scalp and create a flat top or square shape

Answers

Answer:

Buzz cut= razor

technique= going up with the razor to slightly create a certain look

Explanation:

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Write a one page summary of the life of Cornelius Vanderbilt. Which transition could represent an atom that emits a photon with 10.2 eVeV of energy? What is a if 5 to the power of a is 1/125 This answer is mashed potatoes right three different questions BEBEIt is believed the major reason for the decline in amphibian species isa. death through diseaseb. changing reproductive habitsmutationd. climate changeC.Please select the best answer from the choices provided If a city with a population of 500,000 doubles in size every 85 years, what will the populationbe 340 years from now? the ortiz will travel fron indianapolis to denver this summer.The driving distance between the two cities is 1058 miles. They need to find out about how much the gas will cost round trip. Their car gets about 20 miles per gallon. They usually spend about $2.89 per gallon. a write and solve an algebraic equation to find out how many miles they will travel. Explain your steps. b. Write and solve an algebraic equation to find out how many gallons of gas they will use. Explain your steps. c. Write and solve an algebraic equation to find out how much ortiz's will spend on gas round trip. Explain your steps. d. suppose you know the total cost of the gas, do not know the price pe gallon. Explain how you would work backward to solved the problem Expand ; 3(1-x/2)^2 The graph of an equation with a negative discriminant always has which characteristic? difference between data scientist, data analytics? answer the following question Chose any ONE state of matter and explain the space of the particles.Use a drawing to help explain. Que derivados del petrleo se utilizan en la fabricacin de materiales deportivos? Use the scale to help you solve the equation. 12*100 please do it im in a hurry A flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 19 feet more than the length of the shortest side. Find the dimensions if the perimeter is 167 feet.PLS PLS HELP 4(2x-5) = 5x + 4What is the answer? Please include step by step method. PLS HELP ASAP ILL GIVE 5 STARS For what kind of discrimination does the EEOC handle complaints?race and sex onlyrace, sex, color, religion, or nationalityreligion and nationality only Find the value of y when x=7. y=____