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
kipiarov [429]
3 years ago
13

What is the predominant hypothesis why animals only appeared in the fossil record about 3 billion years after life originated?

Biology
1 answer:
Amiraneli [1.4K]3 years ago
3 0
A. There were animals 3 billion years ago; they just weren't fossilized. B. Animals are warm-blooded; the ocean was too cold for animals.
You might be interested in
A nurse observes a 10-month-old infant chewing on the security alarm attached to his identification bracelet. the nurse should:
horrorfan [7]
The answer to this question would be: 3. distract the infant with a more appropriate toy.<span>
An infant wouldn't understand the instruction given by the nurse. It is more appropriate to give the infant another toy to distract him/her from the bracelet. The </span>identification bracelet is important to make sure that a procedure is done for the right patient and shouldn't be removed before the admission is over.
3 0
3 years ago
The photo shows plates of rock breaking away from a large mass of rock. Which form of weathering is occurring in the photo?
Alekssandra [29.7K]
The answer is A. Exfoliation
7 0
2 years ago
Read 2 more answers
Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signal
Dimas [21]

Answer:

Nervous tissue can generate and conduct <u>electrical</u> signals that control the body.

Explanation:

The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.

The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.

<em>     The other options are not true because nerve tissue does not generate or conduct </em><em>thermal </em><em>or</em><em> chemical </em><em>signals to perform its function.</em>

5 0
2 years ago
Read 2 more answers
Regulation of isoleucine synthesis is an example of feedback inhibition of an anabolic pathway. With that in mind, explain how A
Pepsi [2]

Answer & Explanation:

Feedback is a form of regulation where the main product of one reaction, can also inhibit it. It can work in several ways, mainly there's a receptor that, somehow, measures the presence of a determined molecule, in this case, ATP. These receptors can also be involved in the metabolic process and when there's an excess of ATP, the enzymes are inhibited, maybe with an allosteric type of inhibition.

3 0
3 years ago
From which substance are antibiotics usually derived?
rodikova [14]
Antibiotics are usually derived from bacteria.
5 0
3 years ago
Other questions:
  • Describe the development of tools and technologies used in space exploration
    11·1 answer
  • What are the characteristics of preganglionic and postganglionic neurons in the autonomic nervous system? check all that apply?
    15·1 answer
  • What type of fertilization requires a great excess of egg and sperm gametes because most are wasted?
    9·2 answers
  • Which cancer caused the highest number of deaths in 1995/1996
    11·1 answer
  • Which of the traits below are completely influenced by the expression of genes? (Choose all that apply)
    11·2 answers
  • Explain how both a biochemist and a food scientist may assist in making sure people consume a more nutritious diet
    6·1 answer
  • Where is the Medulla locations
    12·2 answers
  • When new dirt is created from organic and inorganic materials, it is called
    7·1 answer
  • I WILL GIVE BRAINLIEST Using the information above and details from your research, write a paragraph of five sentences or more e
    10·1 answer
  • What are the 5 major Oceans?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!