1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hodyreva [135]
3 years ago
6

The first organisms evolved on Earth around 4 billion years ago. The fossil record indicates that the first organisms were which

of the following?
Biology
2 answers:
Irina-Kira [14]3 years ago
6 0
Prokaryotes were the first

frozen [14]3 years ago
5 0

Answer:

prokaryotes

Explanation:

Prokaryotes were the first living beings to appear on earth, about 3 billion years ago. By evolution, prokaryotic cells gave rise to eukaryotes.

At the beginning of our planet, the first forms of life should have a very simple cellular organization. This is because the planet still had inhospitable characteristics that would be unable to support more complex life forms. In this scenario, prokaryotes would be the organisms most likely to survive and thanks to their existence, the most complex forms of life were able to exist.

You might be interested in
Which of the following describes the ability of a single gene to have multiple phenotypic effects?
bija089 [108]

Answer:

A, pleiotropy.

Explanation:

Pleiotropy - genes that have multiple phenotypic effects. Remember that phenotype means a physical characteristic caused by a gene, such as eye color or fur patterns.

Incomplete dominance - when neither allele is dominant and they mix together in the phenotype. A popular example is a red flower crossing with a white flower and resulting in a pink flower.

Epistasis - when two genes contribute to the phenotype, but one gene completely masks another gene. An example would be labrador fur colors.

Multiple alleles - 3 or more alternative forms of a gene, but only 2 alleles can occupy an organism. An example is blood type.

Hope this helps!

4 0
3 years ago
Water pollution from pulp and paper mills harms plants, animals, and humans. this is an example of
Elis [28]
Water pollution from pulp and paper mills harms plants, animals, and humans is an example of<span> a market failure caused by an externality.
</span>The term externalities denotes consequences of an economic activity. <span> When a product or service's price </span>equilibrium<span> does not accurately reflect the true costs and benefits of that product or service this </span>leads to <span>market failure.In this case the externalities are excess production.</span>
6 0
4 years ago
Read 2 more answers
The graph to the right represents the data of this
bogdanovich [222]

Answer:

Bar Graph

Blue

Orange

Explanation:

On Edge2020

7 0
3 years ago
Read 2 more answers
Some differentiated cells retain the ability to proliferate as needed to repair damaged tissue throughout the life of the organi
galben [10]

Answer: The answer is B- Neurons

Explanation:

Neurons are nerve cells whih are fun units of br nervous system. They are desig to transmit inform to other nerve cells, muscles or glands. They do this by rece sensory input from external forces, send motor commands to muscles, glands or other neurons. They transform and relay electrical signal.

Unlike other cell types they cannot proliferate once they are differentiated. They are non-dividing cells.

8 0
3 years ago
Read 2 more answers
What is the advantage of sexual reproduction over asexual reproduction in organisms?
JulijaS [17]
The advantage of sexual reproduction over asexual reproduction is that the organisms produced are each diverse. For example, with bacteria, if each is genetically the same and there is a way to "kill" them, all of them will die. However with sexual reproduction, each organism will be different, and have natural selection, they will build up immunities and grow and change.
4 0
3 years ago
Other questions:
  • How did agre use simple osmosis experiment to prove the function of aquaporin?
    9·1 answer
  • Cell membranes contain a central bilayer formed by - A. lipids / B. protein pumps / C. carbohydrates, / D. proteins
    6·1 answer
  • Which of the following is true of high school clouds?
    14·1 answer
  • What is the sequence of the mrna made from the gene aaacaggtccca?
    6·1 answer
  • 5. What type of energy is needed for active transport?
    13·2 answers
  • The image describes four finch species that live in an isolated ecosystem
    14·1 answer
  • The coral reef ecosystem is said to be stable and not extreme. Describe what this means along with how it affects the food chain
    14·1 answer
  • Explain Excitation- Contraction Coupling. Briefly (2-3 sentences) describe each step involved in this process
    12·1 answer
  • What type of signal is long-lasting and works at night? A) olfactory
    15·1 answer
  • Spontaneous mutations occur most commonly as a result of _________________________ .
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!