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Igoryamba
3 years ago
6

Topsoil is usually eroded first because it _____.

Biology
1 answer:
Trava [24]3 years ago
8 0
Topsoil is usually eroded first because it is made of small, lighter particles. Topsoil is a very useful layer of the soil that is filled with nutrients. This layer where plants grow. The best quality of soil allows for the smooth growth of plants and trees. Topsoil should be soft and made in small and light particles so that the roots can grow below it.

I hope that this helped!
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Compared to neurotransmitters, hormone effects are generally________.
Drupady [299]

Answer:

a. more widespread in the body and affect distant targets.

Explanation:

Hormones are released into the blood by the dustless endocrine glands and the circulating blood delivers hormones to cells throughout the body. Therefore, hormones affect the distantly located cells throughout the body. For instance, growth hormone released by pituitary gland affects soft and hard tissues throughout the body.  

On the other hand, the nervous system release neurotransmitters that affect the postsynaptic neuron or the muscle or gland cells present close to the site of their release. Target cells of neurotransmitters are more limited and include muscle (smooth, cardiac, and skeletal) cells, gland cells, and other neurons only.  

6 0
3 years ago
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secrete
Inga [223]

Answer:

positive feedback

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3 years ago
Calculate the final concentration of BSA in the problems below using the formula
Rudiy27

Answer:

A. C_2=1.5\frac{mg}{mL}

B. C_2=0.075\frac{mg}{mL}

C. C_2=0.01\frac{mg}{mL}

D. C_2=0.001\frac{mg}{mL}

Explanation:

Hello.

In this case, we must compute the final concentration in all the cases so we solve for it in the given equation:

C_2=\frac{C_1V_1}{V_2}

Thus, we proceed as follows:

A. Here, the final diluted solution includes the 300 μL of the 5 mg/ml-BSA and the 700 μL of TBS.

C_2=\frac{300\mu L*5\frac{mg}{mL} }{(300+700)\mu L}\\\\C_2=1.5\frac{mg}{mL}

B. Here, the final diluted solution includes the 50 μL of the 1.5 mg/ml-BSA, the 450 μL of water and the 500 μL of TBS.

C_2=\frac{50\mu L*1.5\frac{mg}{mL} }{(50+450+500)\mu L}\\\\C_2=0.075\frac{mg}{mL}

C. Here, the final diluted solution includes the 10 μL of the 1 mg/ml-BSA and the 990 μL of TBS.

C_2=\frac{10\mu L*1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.01\frac{mg}{mL}

D. Here, the final diluted solution includes the 10 μL of the 0.1 mg/ml-BSA and the 990 μL of TBS.

C_2=\frac{10\mu L*0.1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.001\frac{mg}{mL}

Best regards.

7 0
3 years ago
An organisms heart cell stop working properly as a result what would happen to the organism A the organism would develop new cel
emmainna [20.7K]

Answer:

C

Explanation:

The circulatory system would fail, and the entire organism would suffer.

------i took the test and at first i chose what the person above me said which was A, but i got it wrong. when i looked at the "review" to see which ones i got wrong, it showed that the correct answer is C.

4 0
3 years ago
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Ancient art from native Americans show people caring for animals. T or f
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