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
lidiya [134]
2 years ago
8

Fossil steroid and molecular clock evidence suggests that animals originated __________.

Biology
1 answer:
andreev551 [17]2 years ago
4 0

Answer:

Fossil steroid and molecular clock evidence suggests that animals originated between 770 and 710 million years ago

Explanation:

You might be interested in
What does the chloroplast help plants produce
jeka94

Answer:

Chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis, the process by which light energy is converted to chemical energy, resulting in the production of oxygen and energy-rich organic compounds

4 0
3 years ago
Read 2 more answers
2. Write the molecular formula of following Magnesium Chloride, Sodium chloride, potassium nitrate, hydrogen oxide ​
inna [77]

Explanation:

Magnesium Chloride : MgCl2

Sodium chloride : NaCl

Potassium nitrate : KNO3

Hydrogen oxide : H2O2.

hope this helps you.

5 0
3 years ago
What must be true for natural selection to happen?
Tems11 [23]

Answer:

D

Explanation:

Because there has to be competition or one population wouldnt decrease and the other wouldn't increase due to survival and reproduction the population doesn't always have to be below the carrying capacity because it can also do it when its above and natural selection can act on traits determined by different alleles.

8 0
2 years ago
What term refers to how fast blood traveled from its source? _________ refers to how fast blood traveled from its source to wher
muminat

Answer:

Impact.

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

In Science, the study of blood is generally referred to as serology.

Impact refers to how fast blood traveled from its source to where it landed.

This ultimately implies that, an impact is a measure of the rate at which blood travels from its source to where it lands. The four (4) phases of impact includes;

I. Displacement.

II. Retraction.

III. Contact and collapse.

IV. Dispersion.

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Generally, the right atrioventricular valve (AV) is also referred to as the tricuspid valve and is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

4 0
3 years ago
The evidence that scientists currently have suggests that life on earth __________.
vlada-n [284]
Began in the water
first evolved around 3500 million years ago
began as single celled organisms
7 0
4 years ago
Other questions:
  • An 18,000-watt radio station transmits at 680 kHz. Determine the number of joules transmitted per second.
    14·2 answers
  • Widespread coagulation and subsequent bleeding from a deficiency of clotting factors occurs in
    8·1 answer
  • 1. Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary
    13·1 answer
  • Can producers survive without consumers?
    5·1 answer
  • One quantative issue of global warming
    11·1 answer
  • If piece of copper has a density of 13.29 g/cm³ and a volume of 25 cm, what is the mass of the liquid?
    13·2 answers
  • How are insects different from spiders and centipedes?
    6·2 answers
  • What is the medical definition for edema?
    15·1 answer
  • Tree rings will be BLANK when nutrients are scarce for the tree what is the blank?
    11·1 answer
  • What animal has 8 hearts?​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!