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Luda [366]
3 years ago
12

Pls help! 20 points!!!!!!! Don't just answer for the points!!!

Biology
2 answers:
Jobisdone [24]3 years ago
3 0

Answer:

1.a

2.a

3.a

Explanation:

Juli2301 [7.4K]3 years ago
3 0

Answer: The graph labeled  aggregate emissions  shows that pollution control methods are having a positive effect in the United States. The proof is  a decreasing trend in this graph, with the percentage drop over this period reaching  -63 %.

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Why is pyruvate imported from the cytoplasm into the mitochondrial matrix?
grin007 [14]

Answer:

So that oxidation of pyruvate can take place in mitochondria.

Explanation:

Pyruvates is produced in the glycolysis process which occurs in the cytoplasm. So pyruvate is produced in the cytoplasm of the cell. Pyruvate is produced by partial oxidation of glucose and to be fully oxidized it has to enter in the mitochondria.

So after entering the mitochondria the pyruvate first converts into acetyl CoA than this acetyl CoA enters in the citric acid cycle and fully oxidized into CO2. This oxidation generated NADP and FADH2 which provide reducing power during oxidative phosphorylation.

4 0
3 years ago
The gypsy moth is a species native to Europe that has been brought to the United States. It prefers to feed on oak trees in the
sveticcg [70]
The correct answer is A - eventually a predatory species may utilize it as an energy source and its negative impact on the ecosystem will be decreased but until then, the pad trees will suffer the consequences.
3 0
3 years ago
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How the plate tectonics play a role in the creation of plutons?
olga_2 [115]

Answer:

The majority of granitic magmas are formed by melting near the base of the continents. The magmas slowly rise through the crust like great balloons. They solidify near the surface to form gigantic bodies of igneous rock called plutons, which are exposed later when uplift and erosion remove the overlying rock.

Explanation:

8 0
3 years ago
The first cells to initiate an electrical signal in the heart is the
Lady_Fox [76]

Answer:

Answer is Sinoatrial node, SA.

Explanation:

The sinoatrial node, SA, is known to be a group of cells which are found at the top of the heart.

The electrical signal that is initiated by the sinoatrial node bring about or stimulates the atria and then the ventricle of the heart.

It should be noted that, the sinoatrial node are regarded as the pacemaker cells.

3 0
4 years ago
Some areas of the Earth receive more solar radiation than others. Which of the following results from the Sun's uneven heating o
Setler [38]
The tilt of the earth's axis, which essentially "turns" certain parts of earth so that some parts receive more direct sunlight
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4 years ago
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