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Art [367]
3 years ago
5

3) What are the two most likely causes of the dead zones? (please don't use humans as a cause, list specific actions or byproduc

ts of humans)
4) Describe how fertilizers cause hypoxia and consequently dead zones in coastal ecosystems.
Biology
1 answer:
jok3333 [9.3K]3 years ago
6 0

Answer:

The coastal upwelling and changes in wind and water circulation patterns is the main natural cause of dead zones.

Fertilizers cause hypoxia due to the over growth of algae on the surface of water bodies.

Explanation:

Coastal upwelling is the cause of dead zones in which water that is present in depth comes to the surface of ocean due to the movement of water because of wind. Fertilizers cause hypoxia due to the over growth of algae on the surface of water bodies. The fertilizers increases the algal growth by providing nutrients necessary for its growth. This over growth decreases oxygen concentration in water and affect marine organisms.

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What would be the first thing you would do if your clothes caught fire while working in a laboratory?
zheka24 [161]
Drop and roll on the floor to extinguish the fire. 
6 0
3 years ago
The proportions of the bases are consistent within a species; however they do vary between species. Using the base-pair rules, c
Snezhnost [94]

Answer:

The correct answer would be:

                  A         G          C         T

Human:   31          19          19       31

Cow:         28         22      22         28

Salmon:     29       21       21         29

Wheat        27      23        23        27

Yeast         31         19       19         31

Explanation:

According to the rule of Chargaff which states or explains the amount of the A, T, G, and C bases in the DNA molecule. It says that the DNA of any organism should have a pyrimidine and purine ratio of 1:1. This means the amount of A would be equal to T and the amount G should be equal to the amount of C.

It also says that the amount of a and G would be equal to the amount of C and T. So on the base of this we can find the missing value in the table:

                    A         G          C         T

Human:   31          19          19       31   (A= T and G=C)

Cow:         28         22      22         28  (A= T and G=C)

Salmon:     29       21       21         29   (A= T and G=C)

Wheat        27      23        23        27 (100 - A+T = G+C)

Yeast         31         19       19         31 (A= T and G=C)

5 0
2 years ago
Which type of variable depends on the controlled variables?
Romashka [77]

Answer:

b

Explanation:

because of the law of cause and effect change a small part of a structure change the whole thing

8 0
2 years ago
Read 2 more answers
The sympathetic nervous system differs from the parasympathetic nervous system in that _________. a. the sympathetic nervous sys
OverLord2011 [107]

Answer:

One of the functional differences between the sympathetic and parasympathetic nervous system is that in the sympathetic nervous system first stage neurons have synapses a considerable distance from the target organ (Option C).

Explanation:

Sympathetic nervous system is part of the autonomic nervous system, and is responsible for producing the body's activating response, such as increased heart rate, pupil dilation, and increased muscle strength and endurance. The main neurotransmitters of this system are epinephrine (adrenaline) and norepinephrine.

<em>One of the fundamental characteristics of the sympathetic nervous system is its ability to release neurotransmitters even when they are far from the receptors, while the nerve ganglia of the </em><em>parasympathetic nervous system</em><em> must be close to the target organs.</em>

Learn more:

Autonomic nervous system control brainly.com/question/6820873

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3 years ago
when we fight I know it won't be long a lot of time passes i know you cry I know it's so bad your world out there So come back i
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okkkkkki thumbs up ::::::::)))))))

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