Which is a reason that many organisms that have existed on Earth have left no fossils?
A. Many organisms live only in rainforests.
B. Fossils cannot form underwater.
C. Fossils can only form near volcanoes.
D. Fossils decay according to their half-life.

Answers

Answer 1

Answer:

I belive its D

Explanation:

half life is time it takes for a fossil to form

Answer 2

Answer:
Many organisms live only in rainforest

Explanation:

Just because


Related Questions

are plasmids in prokaryotic or eukaryotic cells

Answers

Plasmids are in both prokaryotes and sometimes eukaryotes cells!

Which ecosystem is the least stable?
A.savanna
B.coral reef
C.rain forest
D.cornfield

Answers

Answer:

D

Well in a cornfield, its only corn and if your a hebirvore, its heaven there, but for canviroe's it doesnt work out to well, also corn field's are normally in a farmer's land, so meat eating animals dont really liketo go there, or they migth get shot

Hope this helps!

Answer:

D

Explanation:

I got it right on AP3X

-sorry if it's not the same

Which of the following is the correct
chemical formula for glucose?
и
A. C 2 H ₂012
B. CeH1206
C. C12H06
D. C.H.012
и

Answers

Answer:

C6H12O6

Explanation:

This is glucoses formula

When compared to prokaryotic cells, eukaryotic cells
4
A. are simple, smaller, and have DNA floating freely throughout the cell.
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
C. are round and hard, unlike rectangular and soft prokaryotic cells.
D.
are able to move from place to place, unlike stationary prokaryotic cells.

Answers

Answer:

B. are complicated, larger, and have DNA captured in a membrane-bound structure.

Explanation:

DNA is found in the nucleus of the cell that is membrane bound structure.

B is your answer to your question

What element has 1 valence electrons and 4 energy levels?

Answers

Answer:

Hydrogen and helium, both in the first period, have their valence electrons in the principal energy level n=1

Explanation:

Answer:

Hydrogen and Helium

Explanation:

how the scientist evolve?
Your own word

Answers

Answer:

Evolution is a consequence of the interaction of four factors: (1) the potential for a species to increase in number, (2) the genetic variation of individuals in a species due to mutation and sexual reproduction

Show different life cycle patterns with the help of near labelled diagram

Answers

Answer:

The life cycles of all sexually reproducing plants follow a pattern of alternation between a haploid, sexual generation called gametophyte with a diploid, asexual generation called sporophyte.

This phenomenon of alternation between gametophyte (n) and sporophyte (2n) in the life cycle of a plant is called alternation of generations (Hofmeister, 1851).

Alternation of generations is of two types- isomorphic and heteromorphy. In isomorphic (or homologous) type both the alternating generations are morphologically similar, while in heteromophic (or heterologous) type of alternation of generations both the generations of life cycle are morphologically dissimilar.

Explanation:

Should water (H2O) be included in the model as a reactant or product? If so, how should it be included?


Yes, as reactant A.
Yes, as reactant A.

Yes, as product B.
Yes, as product B.

Yes, as reactant C.
Yes, as reactant C.

No, it should not be Included.

Answers

Answer: A.) Yes, as reactant A.

Explanation: I hope this helps !!


Which of the following would NOT be a density-dependent limiting factor?
Disease
Food
Water
Extreme weather

Answers

Answer:

factors. Some—such as competition, predation, parasitism, and disease—depend on population density. Others—including natural disasters and unusual weather—do not depend on population density.

Explanation:

.

Explain how a symbiotic relationship like the one described in the endosymbiotic theory would have benefited each cell.

Answers

Answer:

cannot grow outside their host cell of biolapsy

The symbiotic relationship is a type of relationship in which two organisms living with each other and gives benefit to one another.

Mutualism is a type of symbiotic relationship in which both organisms benefited from one another. In this type of relationship, one organisms is smaller that lives inside the body of other big organisms.

For example, bacteria lives in the nodules of plant's root. The plant provides shelter to the bacteria while on the other hand, bacteria fixes atmosphere nitrogen into available form so in this way both get benefits from one another.

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What viral reproduction cycle allows the cell to reproduce it self along with the viral genetic material
A. lytic cycle
B. lysogenic cycle
D. both

Answers

The answer is lysogenic cycle

Match the feature with its description.

HELP!! ASAP

Answers

Answer:

In order:

Stalactities

Stalagmites

Swallowhole

Sinkhole

The correct match of the features are:

Stalactites: Grow toward the cave floor.

Stalagmites: Grow toward the cave ceiling.

Swallow hole: A cave that has collapsed because of gravity.

Sinkhole: Where a stream disappears into the ground.

What are Stalactites?

Mineral deposits known as stalagmites and stalactites are frequently seen in caves. The pointy, downward-pointing minerals that fall from the caves' roofs give rise to the stalactites.

On the other hand, stalagmites are created when minerals that fall from the roof are deposited on the ground afterward.

Therefore, the correct options are:

Stalactites: Grow toward the cave floor.Stalagmites: Grow toward the cave ceiling.Swallow hole: A cave that has collapsed because of gravity.Sinkhole: Where a stream disappears into the ground.

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Rico and Bree are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree's potato has a high temperature. What is the difference between the molecules of the two potatoes? *

Answers

There is no difference because both potatoes are made of the same type of molecules.

What is Molecules?

Molecule is a group of two or more atoms that are bound together with the help of some attractive forces. These attractive forces are known as chemical bonds. It is the smallest particle of a substance that has all the physical and chemical properties of that substance.

Atoms have a single nucleus with a positive charge protons surrounded by a cloud of negatively charged electrons. When these come close to each other, the electrons interact with each other and with the nucleus, lowering the total energy of the system, then the atoms bond together to form a molecule.

There are three types of molecules:

1. Molecule of an atom

2. Molecule of an element

3. Molecule of a compound

Thus, there is no difference because both potatoes are made of the same type of molecules.

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Help me out with this question

Answers

Carbohydrate monomer because it’s glucose which is a sugar

Answer:

the answer is B, hope this helps

Explanation:

please help me please I can’t fail

Answers

Answer: sunlight

Explanation:

it needs light to undergo photosynthesis since its what provides the initial energy that starts it

A producer gets energy from _______ and converts it into food. a.Primary consumers b.The sun c.Nonliving organic matter d.Secondary consumers

Answers

The answer is going to be B. The sun

What are spring tides called (high tides or low tides)

Answers

Answer:

Spring tides have higher high tides and lower low tides

so spring tides or low and high just more extreme in either direction

Which process occurs during the growth and development of a fertilized human egg?
(1) cell division
(2) natural selection
(3) germination
(4) evolution

Answers

Answer:

cell division

Explanation:

Answer:

option A

Explanation:

option A is the correct answer.

as for the growth and development of the fertilized egg zygote which is a single cell it divides and form new cells and became embryo and foetus later on .

hope this will be helpful to you.

plz mark my answer as brainlist plzzzz.

9. What genetic syndrome is shown in this picture?*

Answers

Down syndrome !!!!!!!!!
What that guy said I guess

What would be the result if crossing over did not happen during meiosis in humans?

Answers

Answer:

A lack of genetic variation in offspring

If crossing over did not occur during meiosis, there would be less genetic variation within a species.

Which statement is most accurate regarding the energy in the process of photosynthesis?

Light energy does not need to be present for photosynthesis to occur.

Light energy is completely lost during the photosynthesis reaction.

More energy is created than what was present initially.

Light energy is converted into chemical energy in photosynthesis.

Answers

Answer:
D) Light energy is converted into chemical energy in photosynthesis

Answer:

D) Light energy is converted into chemical energy in photosynthesis

Explanation:

Hope this helps

I NEED THIS ASAP!!!!!
Gravity is an example of which kind of force??
A) contact
B) noncontact
C) speed
D) direction

Answers

Answer:

I want to say B. Noncontact

Explanation:

I hope this helps!

Answer:

b

Explanation:

3. What is the kingdom that contains single-celled organisms that live in extreme environments?

A. plantae

B. bacteria

C. protista

D. archaea​

Answers

D - Archaea

All organisms are unicellular & they live in extreme environments, like heat and salt.

The kingdom that contains single-celled organisms that live in extreme environments is archaea. The correct option is D.

What are single-celled organisms?

A single cell makes up a unicellular creature, also referred to as a single-celled organism, as opposed to a multicellular organism, which is made up of numerous cells. Similar to Eukarya, Archaea have RNA polymerases that are more complicated than those of bacteria.

Archaea do not have peptidoglycan in their cell walls, in contrast to bacteria. The membrane lipid bonding of archaea differs from that of bacteria and eukarya.

Genetic differences exist. Similar to Eucarya, Archaea have RNA polymerases that are more complicated than those of bacteria. Archaea do not have peptidoglycan in their cell walls, in contrast to bacteria. The membrane lipid bonding of archaea differs from that of bacteria and eukarya. Genetic differences exist.

Therefore, the correct option is D. archaea​.

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What part of a flowering plant develops into a seed after fertilization has taken
place? The diagram shows this at # 4.

Answers

Answer:

The ovules would develop into a seed after fertilisation. #4 is pointing to it

Question # 9
Multiple Choice
Which of the following best characterizes the global role of photosynthesis in relation to global warming?


reproduction

circulation

respiration

digestion

Answers

Photosynthesis is a process by which plants use sunlight, water, and carbon dioxide to produce carbohydrates, and other biological compounds, which reduces the amount of carbon dioxide in the air. This is the difference between plants and animals. The carbon dioxide is stored in the plants until they decompose or are burned. So, for example, each fall when the trees lose their leaves and the plants die the level of carbon in the atmosphere goes up. The rest of the tree, bark etc., does not continue to absorb carbon. Plants only take in carbon so long as they are growing and not after they have reached their natural height. Planting trees and other plants is one component of the solution to global warming, but the number of plants we have now cannot consume more carbon than they already do, and there is some evidence that warmer temperatures make photosynthesis more difficult.


The answer is RESPIRATION
The answer is respiration

Describe at least two of the four major systems we looked at in class: Ice, Water, Land, Atmosphere and
provide a specific example of how these systems are connected to one another

Answers

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

What is the meaning of science?

Answers


The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

The effect of carbon dioxide on the atmospheric temperature is BEST shown by graph

Answers

Answer: definitely C will help you

Explanation:

Due to green house effect carbon emission increases rapidly day by day due to which the temperature of earth has been increasing with respect to time.We can clearly observe that the graph C shows the exact condition. Thus, C is the correct option.

What is the main reason of emission of carbon?

According to the information given in the question, we can state that global temperatures tend to increase as carbon emissions increase due to green house effect.

According to the information in the question, the increase in carbon emissions is one of the main factors responsible for the increase in global temperatures.

This can be proven by observing the graph, where it is possible to see that there was a significant increase in global temperatures, as carbon emissions increased.

These carbon emissions are the result of the increase in human activities and industrial processes, which promote the degradation of the atmospheric layers and allow an intense increase in global temperature.

Therefore, Due to green house effect carbon emission increases rapidly day by day due to which the temperature of earth has been increasing with respect to time.We can clearly observe that the graph C shows the exact condition. Thus, C is the correct option.

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Can someone help me please this is due today!

Answers

Genetic variation and environmental factors contribute to natural selection by making animals do things such as competing for resources, or having them avoid diseases, so therefore only the strongest survive.

The zygote is said to be Choose... , because it is able to develop into any kind of cell in the body. Adult stem cells are referred to as Choose... , because they can differentiate usually only into the cells of the tissues where they are found, whereas embryonic stem cells are Choose... because they can develop into any of the body’s cell types, although they cannot form the tissues surrounding the embryo.

Answers

Answer:

The correct answer is -

1. totipotent

2 multipotent

3. pluripotent

Explanation:

The cells that are able to develop or differentiate a different kind of cells in the body of the individual are known as totipotent cells and this ability is known as totipotency. An example of such cells is found in the zygote.

Multipotent on the other hand are the cells that are able to develop into a specific kind of cell of tissues these cells are present and the example of this type of cell is adult stem cells. Whereas Embryonic stem cells are Pluripotent cells that are characterized as the cells that develop into any type of cell of the body of an organism.

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