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ikadub [295]
3 years ago
9

The photograph shows soil layers. What is the bottom layer of soil?

Biology
1 answer:
aleksley [76]3 years ago
5 0

Answer:

bed rock

Explanation:

ok ok ok ok ok ok ok ok ok ok ok

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Scientists have observed many types of tropical fish moving beyond their traditional ocean ranges into waters that have historic
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Raising Temps

B

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4 0
3 years ago
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
Can you explain what mitochondria are? Where are mitochondria found?
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Mitochondria are a<span>n organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae).</span>
7 0
3 years ago
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The organs for digestion, excretion, and reproduction are located in the ___________ cavity.
hoa [83]

The organs for digestion, excretion, and reporduction arelocated in the

Abdominal cavity


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One difference between photosynthesis and cellular respiration is that
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the answer is A, in the mitochondria

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