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natulia [17]
4 years ago
8

On early Earth, what was referred to as the "primordial soup"?

Biology
1 answer:
Gennadij [26K]4 years ago
8 0
Primordial soup is a theory created by the biologist Alexander Oparin, it established that life originated in a pond or an ocean as a result of chemicals combinations produced by the earths atmosphere and some forms of energy to make amino acids, the building blocks of proteins, which would then evolve into all species
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Which of the following is true about ischemic stroke? a. Often caused by emboli from the basilar arteries b. Has risk factors th
sleet_krkn [62]

Answer: Option B.

Has risk factors that include atherosclerosis

Explanation:

Ishchemic stroke has a risk factor that include Atherosclerosis because it is when blood clot causes a blockage to artery that supplies blood to the brain.

This is major caused by buildup of plagues or deposition of cholesterol ( atherosclerosis). The blockage reduces the blood flow and oxygen to the brain, which cause damage or death of brain cells

If the arteries become too narrow, blood cells may collect and form blood clots.

4 0
3 years ago
Which option denotes the professional that most likely will be called in to help in the following scenario?
rjkz [21]

The professional that most likely will be called in to help seismologist.

<h3><u>Explanation:</u></h3>

When an underwater earthquake has just been recorded in the middle of the Pacific Ocean, the seismologists will be called to determine if the effects of this earthquake and whether or not it will cause tsunamis off the coast of Hawaii.

Seismology is the study of earthquakes, the escalation of waves and the effects they might have. A seismologist is a scientist who is concerned with these studies. They make use of seismographs and other relevant tools to gather essential data which helps in reading the planetary movements and understanding them better. The study does not always predict an earthquake but it helps in predicting the possibility of tsunamis. Seismology enabled the development of tsunami warning systems.

5 0
4 years ago
The systolic arterial blood pressure observed for 20 dogs is normally distributed with a mean of 152 mm of mercury (hg) and a st
Damm [24]

Given: The systolic arterial blood pressure observed for 20 dogs is normally distributed with a mean of 152 mm of mercury (Hg) and a standard deviation of 18 mm of Hg.  

To find: P(100 < 152)

Method: Calculation of Z-Score followed by the probability or area of the bell curve at X = 100.

Solution:

Mean u = 152, std s = 18

Z score = \frac{X-u}{s} = \frac{100-152}{18} = -2.89

The value of P(100<152) is calculated by looking at the value of Z in the Z score for the standard normal distribution given in the image.

P(Z=-2.89) = 0.0019

The P(Z = -2.89) corresponds to the area in the left tail of the bell curve.

Thus the probability of 100 mm Hg blood pressure is 0.0019.

7 0
3 years ago
The autonomic nervous system _____.
Mademuasel [1]

Explanation:

The autonomic nervous system _____.

A. controls involuntary actions

The nervous system is subdivided into; the central nervous system (CNS), which includes the brain and spinal cord, within the vertebral column; and the peripheral nervous system, which includes nerves that branch into the rest of the body from the brain and spinal cord. Nervous tissue responds to electrical impulses, allowing for communication between different regions of the body.

The peripheral nervous system is further divided into the somatic nervous system responsible for carrying out sensory and motor information between the peripheral nervous system- including sensory organs like the eyes; and central nervous system; and the autonomic nervous system (ANS) which regulates involuntary bodily functions like heartbeat, breathing and blood flow. The ANS is mainly acts unconsciously and affects smooth muscle and internal organs. It is related to homeostasis- where the body maintains a constant internal balance in pH, temperature, blood pressure etc.

Learn more about the autonomic nervous system at brainly.com/question/10386413

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

3 0
3 years ago
Why the walls of atrium are thin? <br><br><br>only about atrium thinner not than ventricles plz​
Basile [38]

This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.

5 0
3 years ago
Read 2 more answers
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