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Anni [7]
3 years ago
5

How have humans affected their environment over time?

Biology
2 answers:
love history [14]3 years ago
5 0
We have polluted it— the air, water and the ground.
Some people have tried to clean up the environment
steposvetlana [31]3 years ago
3 0

Answer:

humans impact the physical environment in many different ways

Explanation:

over population, pollution, burning fossil fuels, and deforestation.  All these changes have triggered climate change, soil erosion, poor air quality, and undrinkable water.  

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Will give brainliest to correct answer
sp2606 [1]

Answer:

(i)

x= nucleus

y= chloroplasts

z= vacuole

(ii)

1) an animal cell does not contain a vacuole but a plant cell does

2) a plant cell contains chloroplasts but an animal cell does not

7 0
2 years ago
19. A cell is ready to break down pyruvate
iVinArrow [24]

Answer:

The correct option is C. The cell followed Kreb's pathway.

Explanation:

Krebs cycle can be described as a metabolic pathway for the release of energy during the process of aerobic respiration. The Kreb's cycle constitutes a series of oxidation reactions through which pyruvate is converted into carbon dioxide. About 15 moles of ATP is released as a result of Kreb's cycle. The reactions of the Kreb's cycle take place mostly in the mitochondria. The Kreb's cycle is commonly named as the Citric Acid Cycle.

3 0
3 years ago
Calcification, or ____________ , then occurs when ____________ crystals deposit in the bone matrix.
Marizza181 [45]

Answer:

Calcification, or mineralization, then occurs when hydroxyapatite crystals deposit in the bone matrix.

Explanation:

Calcification -

It is the situation of the accumulation of the salts of calcium in the tissues of the body , is known as Calcification .

This process usually occurs during the bone formation , but in abnormal condition the soft tissues of the body gets harden , leading to the situation of Calcification  , it is also known as mineralization .

The crystal deposited are of hydroxyapatite in the bone matrix .

4 0
3 years ago
One of the three main functions of stems is to
kirill [66]

the answer is b! It helps carry nutrients along the plant itself!
5 0
3 years ago
An earthquake epicenter is 6200 kilometers from a location. If the s-wave arrives at 5:20:20, what time did the p-wave arrive?
dexar [7]

Answer:

21

Explanation:

8 0
3 years ago
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