What types of evidence allow scientists to infer that single-celled life likely existed 3.8 billion years ago? Select all that apply.
A. transitional fossils in ancient rocks
B. certain forms of carbon in ancient rock
C. fossil evidence, such as stromatolites
D. evidence of extinction events

Answers

Answer 1

Answer:

c

Explnation: fossil evidence, such as stromatolites


Related Questions

1. Which type of weather is associated with a maritime polar air mass?
A. cloudy and rainy
B. cloudy, warm, and dry
C. warm, sunny, and clear

Answers

Explanation:

Option A is the correct answer.

Answer:

A. cloudy and rainy

hope it is helpful to you

BEST ANSWERRRRR BRAINLIEST!!!!!!!!!
Ida's mother has blue eyes and her father has brown eyes. DNA analysis shows that Ida carries alleles for both blue and brown, but her eyes are brown. What does this make Ida's brown allele?

Recessive
Dominant
Codominant
Sex-linked

Answers

I believe the answer is codominant
i would assume dominant ?? i hope that helps lol

Which of the following describes an adaptation to the winter season?

Answers

Answer:

uh I don't don't know what which of the following your talking about do you just expect me to read you through the screen?!?

Giving brainlist PLSS help

Answers

I would love to help but I don’t see what your asking help with for so i can’t help you. :) I hope this information was helpful

orgain foods are natural and are believed to protect feom diseases and to be of higher quality. What is the most likely factor keeping organic foods from completely replacing conventional foods? a) greater cost b) health concerns c) environmental issues d) greater availability

Answers

Answer: A greater cost

Explanation: just took the test

4)
from "Carbon Dioxide and Photosynthesis"
What is the independent variable in this experiment?
A) type of plant
B) number of trials
C) amount of carbon dioxide
D) number of oxygen bubbles
3

Answers

Answer:

A

Explanation:

Wdg

A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that
the organism is an animal?
It is multicellular and can move itself from place to place.
It is heterotrophic and unicellular.
It makes food from sunlight and is eukaryotic.
It is prokaryotic and can move itself from place to place.

Answers

Answer:

i think that the answer from your choices would be that

its multicellular and can move itself from place to place.

Explanation:

A scientist discovers a new organism and is trying to classify it  likely indicate that the organism is an animal, It is multicellular and can move itself from place to place.

Which is multicellular organism?

Multicellular organisms are those composed by multiple cells. They are typed in 13 major groups of terrestrial living beings, including animals, plants, fungi, ciliates, algae, and foraminifera.

Thus, option "B" is correct.

To learn more about multicellular organism click here:

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My eyesight is weak plzz tell me how can i improve?❤ ​

Answers

Answer:I will gladly love to help you but what can I improve you with.

Explanation:

Small, nonpolar hydrophobic molecules such as fatty acids
a. pass readily through a
membrane's lipid bilayer
b. diffuse very slowly through the lipid bilayer
c require special channels to enter a cell
d. are actively transported across cell membranes
c. must enter the cell via endocytosis

Answers

Answer:

a. pass readily through a membrane's lipid bilayer

Explanation:

Small, nonpolar hydrophobic molecules such as fatty acids pass readily through a membrane's lipid bilayer.

Small, nonpolar hydrophobic molecules such as fatty acids pass readily through a membrane's lipid bilayer. Therefore, the correct option is option A.

The hydrophilic (water-loving) heads of the two layers of phospholipids in the lipid bilayer face outward towards the aquatic surroundings, while the hydrophobic (water-hating) tails point inward towards one another. The hydrophobic tails of phospholipids share characteristics with nonpolar hydrophobic compounds like fatty acids. These tiny molecules can easily dissolve in the hydrophobic area of the lipid bilayer because of their hydrophobic nature.

Therefore, the correct option is option A.

To know more about fatty acids, here:

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What do a Salamander and a Tuna have in common? *

Answers

Answer:

DNA structure

Explanation:

zfzgzv hv jvc ncxgheagkz j my

One of the alternative forms of a gene that governs a characteristic. Can be seen as AA, Aa, aa
A.Genotype
B.Genetic Variation
C. Phenotype
D.Gene​

Answers

B. Genetic Variation
A. Genotype (AA,Aa,aa)

It could be genetic variation but based on the question they would’ve added more context or include the word “population”

Answer this question please quickly

Answers

Answer:

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Some examples include height, skin color, eye color and weight.

- In polygenic inheritance the "dominant" capital genes are additive, each capital gene adding one unit of color to the genotype.

Please help I’ll mark you as brainliest if correct

Answers

The answer is B, Regulates what comes in and out of the cell.

Extracellular signal molecules that are hydrophilic must bind to a cell-surface receptor in order to signal a target cell to change its behavior. These are examples of hydrophilic hormones in animals: A. tyrosine-derived epinephrin and norepinephrin B. insulin and glucagon C. serotonin and melatonin (tryptophan-derived mammalian neurotransmitters D. All of the above E. None of the above

Answers

Answer:

The correct answer is - D. all of the above.

Explanation:

Hydrophilic hormones are the hormones that can not pass through the cell membrane as they are poorly lipid-soluble and cannot pass through cell membranes and bind the receptors present on the surface of the membrane.  

Insulin and glucagon are peptide hormones that bind to a receptor in the target cell's membrane surface. Norepinephrine and epinephrine are catecholamines that are hydrophilic in nature.  Seratonin and Melatonin are also bound on the surface receptor due to their hydrophilic nature.

(I HAVE 20min TO ANSWER THIS, NEED HELP) Based on the field lines, what are the charges of the
objects?
OX: positive
Y: negative
OX: negative
Y: positive
O X: negative
Y: negative
OX: positive
Y positive

Answers

Answer:

X: positive

Y: positive

Explanation:

The charges of the objects are:

OX: positive

Y: negative

The concept of electric field lines is a way to visualize the electric field around a charged object or group of objects. Electric field lines point in the direction of the electric field at each point, and the density of the lines corresponds to the strength of the electric field.

By following the direction of the field lines, we can make an inference about the relative charge of the objects. For example, field lines that originate from a positive charge will terminate on a negative charge, while field lines that originate from a negative charge will terminate on a positive charge.

Therefore, based on the field lines, we can determine that:

Option 1 is incorrect, as the field lines terminate on a negative charge.

Option 2 is incorrect, as the field lines originate from a negative charge.

Option 3 is incorrect, as the field lines originate from a negative charge and terminate on a negative charge.

Option 4 is correct, as the field lines terminate on a positive charge.

Learn more about charges at:

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Which nation did the United States compete with during the Space Race?ChinaJapanthe Soviet Unionthe United KingdomMark this and return

Answers

Answer: Soviet Union

Explanation:

Answer:

I think it's "The Soviet Union"

Which option describes adaptation?
Select one:
A. Parents pass their genes to their offspring,

B. Only the strongest individuals in a population are likely to survive.

C. Over time, populations gain traits that make them more suited for the
environment

D. if there are enough resources, the population will grow

Answers

Answer:

C

Explanation:

Adaptation was first purposed by Charles Darwin, he stated that as the environment changes the animals will gain adaptations suitable for the environment. Therefore, C is the correct answer.

Have a nice day.

What happens to the moon if Earth’s mass decreased?

Answers

answer:

if earth's mass decreased, then the moon would go further away.

explanation:

the gravitational force of earth depends on its massif the mass decreased, then the gravitational force would also decrease which means that the moon would go further awaygravity is the reason why the moon is close to the earth and why we can see it at night

Which motility structure is correctly paired with its description

Answers

Answer:

D

Explanation:

Eg

Osmosis, where sea water and fresh water on different sides of a
permeable membrane will end up "brackish" with equal salt content
over time is an example of what?
Passive transport
O Active transport
Transitive chemistry
O A lipid bilayer

Answers

A Lipid because it's a fresh osmosis they are always active

Answer:

Passive Transport

Explanation:

Passive transport is defined as the movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.

Are viruses living or non- living?
Provide short explanation
No links please

Answers

Answer:

Virus are non living Things :)

Gerald is lightheaded and tired from the lack of oxygen in his tissues.
What most likely is the reason he feels this way.
his plasma level is to high
his white blood cell count is high
his platelet count is low
his red blood cell count is low

Answers

His red blood cell count is low.

— hope this helps—

Answer:

D

Explanation:

HELP
Oldest to youngest

Answers

Answer: Oldest to Youngest: B,E,C,D,A

Explanation: Hope that helped! :)

B, E , C , D , & A :)))

how does the method of obtaining energy for fungi differ from that of plants and animals?​

Answers

Answer:

From animals they need energy to get it fungi they can make it

Explanation:

Answer:

Fungi obtain their energy from absorbing either dead or living organisms.

Explanation:

Fungi are heterotrophic, meaning they cannot produce their own food, unlike plants. Plants are able to perform photosynthesis to obtain their energy by converting carbon dioxide and water into oxygen and glucose. However, unlike animals who go out to either hunt or forage food (for example, a deer eating grass or a wolf hunting a bunny), fungi absorb nutrients from dead or living organisms. For example, a fungi might be seen next to a decaying oak log. Or, it might be seen on the bark of a living tree.

What results from meiosis of a diploid cell? ​

Answers

Answer:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell

Explanation:

Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. ... The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.

Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. CCredit: Internet source

How do we know that humans
are causing the Earth to warm
and the climate to change?

Answers

Explanation:

we can track climate patterns back to us on earth and the excessive use of fossil fuels and other gasses contribute to this - its basically proven that we are the reason climate change is a thing. climate will change by itself by us humans are causing this to be much faster than it should be

In many large mammal populations, highways can be barriers to movement - individuals rarely cross them. One solution to this problem has been to install overhead bridges for wildlife to safely cross. The goal is to increase gene flow between the populations on either side of the highway. Which of the following would you expect to see if the bridge is successful in its goal?
a) The two populations would have different mutation rates
b) We would see fewer heterozygotes in both populations
c) Higher levels of drift would occur after the bridge is installed
d) The two populations would become more genetically similar
e) Both populations would decrease in size

Answers

Answer: c. Higher levels of drift would occur after the bridge is installed

Explanation:

Based on the information given in the question, if the bridge is successful in its goal and overhead bridges are installed for wildlife to safely cross, then there'll be higher levels of drift after the bridge is installed.

Since the highways are barriers to the movement of the wildlife, overheard bridges will bring about movement on the other side of the highway and this will result in and increase in drift between both parts of the highway. This will also help in the increase of gene flow between the populations.

Therefore, the correct option is C.

if anyone has done this assignment before and knows the answers please help I’ll mark brainliest

Answers

Answer:

1. I will put a.c in home and drink cool and stay cool

2. I will drink ginger tea and coffee

it will automatically do when I eat some hot things it will warm when I eat cool I feel chill ☺️

You went running on a hot day. After your run, you sit down and feel very warm. How is homeostasis reacting?

Answers

Answer:

When you run, your muscles use energy and contract. This contraction and use of muscle fibers produces heat, lactic acid, and carbon dioxide. Your body will attempt to correct homeostasis by sweating to cool down your body (When the water in your sweat evaporates, it takes some heat energy with it), you breath harder to get rid of the excess carbon dioxide, and your blood attempts to clear the lactic out of your muscles.

Elephants live grouped in herds. This is why it is so difficult for a lone elephant living at a circus or exhibit. What type of population distribution do we call animals that live in herds, schools or other groups?
A
random
B
uniform
C
clumped
D
density cluster

Answers

Answer:

clumped

Explanation:

Uniform dispersion is observed in plant species that inhibit the growth of nearby individuals. Random dispersion occurs with dandelion and other plants that have wind-dispersed seeds that germinate wherever they happen to fall in a favorable environment. Clumped dispersion is seen in plants that drop their seeds straight to the ground, such as oak trees, or animals that live in groups, such as schools of fish or herds of elephants.

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