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mestny [16]
2 years ago
15

Part E

Biology
1 answer:
goldfiish [28.3K]2 years ago
8 0

Answer: I do not know if this is correct, but this is what I answered.

Explanation:

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Scientists discovered fossils in several layers of the Earth you see here. They found fossils of algae, snails, and clams in lay
Slav-nsk [51]

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The answer is C. F

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6 0
2 years ago
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What are the variables based on the paragraph?
astraxan [27]

Answer:

The input or x value= spf

The output or y value= Minutes of exposure until sunburn

3 0
3 years ago
Which of the phyla has bilateral symmetry?
Svetach [21]
Arthropods has the bilateral symmetry !
so answer is B !
6 0
3 years ago
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In humans, the quadriceps muscle is a skeletal leg muscle under voluntary control. As such, it contracts in response to signals
Masja [62]

Answer:

The correct answer is - operation of reflex arc.

Explanation:

The reflex arc is a unique and special type of neural pathway that starts with a sensory neuron and ends with a motor neuron. In this operation sensory neuron acts as the receptor and motor neuron is effector. This type of neural circuit helps in faster response.

Voluntary muscles like quadriceps muscle are normally in control voluntarily however, such muscle may contract involuntary due to reflex arc. This type of contraction takes place before the signal has even reached the brain.

In this response the sensory neuron takes the signal to the spinal cord and then motor neuron to the effector muscle for faster response.

Thus, the correct answer is - operation of reflex arc.

8 0
3 years ago
Name 3 critical areas of the body that are accurately maintained by homeostasis.
tester [92]

Answer: Respiratory system, Excretory system, and Endocrine system.

Explanation:

Homeostasis is the process through which several organ systems work to maintain a stable internal environment in the body. There are three organs of the body which ar eaccurately maintained by homeostasis:

Respiratory system: High carbon dioxide content in the blood triggers faster breathing. Most frequently, the lungs exhale, which quicker extracts carbon dioxide from the body.  

Endocrine system: High blood sugar content causes insulin release by an endocrine gland called pancreas. Insulin is a hormone which helps the cells absorb blood sugar.

Excretory system: A low blood level of water causes kidney accumulation of water. The kidneys contain more concentrated urine, so less water from the body is lost.  

Hence, three critical areas are respiratory system, excretory system, and endocrine system that are accurately maintained by homeostasis.

6 0
3 years ago
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