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Artemon [7]
3 years ago
15

what elements are in the most common substance in the human body? a. carbon and nitrogen b. hydrogen and oxygen c. oxygen and ph

osphorus d. calcium and nitrogen
Biology
1 answer:
evablogger [386]3 years ago
7 0
B. Hydrogen and Oxygen
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An experimenter wanted to test the effects of cigarette smoking on rats. She infused the cages of 50 rats with cigarette smoke a
Feliz [49]

Answer:

Control group

Explanation:

A control group is<em> a group of individuals in an experiment where the independent variable being tested (the exposition to cigarette smoke in this case) can't influence the results.</em> This control group will be then compared to the experimental group (exposed to the smoke) to see the effect of the variable evaluated.

I hope you find this information usefula nd interesting! Good luck!

4 0
4 years ago
what is the force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second
vichka [17]

Answer:

The force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second is 12 newton.

Explanation:

  • According to Newton's second law based motion "the moving object's acceleration is based upon two terms - one is the total force acting upon that object and the other one is the net mass of the object."
  • In mathematical term, F=ma. where F= force, m= mass, a= acceleration.
  • So, by performing the calculation, \bold{\mathrm{F}=30 \times 0.4 \mathrm{N}=12 \mathrm{N}}
  • 12N force will move the boy along with the wheel chair.
8 0
3 years ago
What regulates the exit of partially digested food?.
olga_2 [115]

The way that partially digested food leaves the body is through the pyloric sphincter.

<h3>What is digestion?</h3>

The term digestion has to do with the breaking down of complex food substances that is taken in by animals during nutrition. Food that is digested will go out of the body in semisolid form.

Hence, way that partially digested food leaves the body is through the pyloric sphincter.

Learn more about digestion:brainly.com/question/1283194

#SPJ4

8 0
2 years ago
The brain's ability to restructure its neural networks to maximize functioning after an injury is known as
igor_vitrenko [27]
This capacity is known as Neuroplasticity. Neuroplasticity is the change in neural pathways and neurotransmitters that happens because of specific variables, similar to conduct, condition, or neural procedures. Amid such changes, the cerebrum participates in synaptic pruning, erasing the neural associations that are never again fundamental or helpful, and reinforcing the vital ones.
7 0
4 years ago
What is the function of DNA polymerase?
Rus_ich [418]

Answer:

Adding base pairs

Explanation:

If it help follow me on brainly please

4 0
3 years ago
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