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EleoNora [17]
2 years ago
6

in high elevation forests n Pennsylvania, ecologists have noticed a serious decline in certain tree species. Some scientists pro

pose that increased soil acidity might be the cause. Whats the phenomenon? A. Mercury contamination B. Decreased in pH caused by climate change C. Acid rain, which is caused by SO2 from combustion mixed with atmospheric water vapor D. Ozone depletion
Biology
1 answer:
Solnce55 [7]2 years ago
5 0

Answer:

I would choose answer B.

Explanation:

Acid rain is caused by combustion chemicals mixing with water vapor in the atmosphere. It normally results in high amounts of acid in the soil, and surrounding bodies of water.

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Which type of cells has a chloroplast?
galben [10]

Answer:

plant cell

Explanation:

Animal cells do not photosynthesize (with the exception of one animal but biology is INCREDIBLY diverse and creative.)

4 0
2 years ago
What is Nature. explain​
KIM [24]
Nature, in the broadest sense, is the natural, physical, material world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.[1]

6 0
3 years ago
Refer the the graph below showing the absorption spectrum of chlorophyll a. Explain what the graph is showing
Stella [2.4K]

Answer: The graph shows that chlorophyll a absorbs light principally around 420-450 nm and 650-680nm wavelengths

Explanation: Chlorophyll a is a pigment found in plants that traps light energy for use in photosynthesis. Chlorophyll a absorbs light mostly in the blue and orange-red wavelengths. This is shown in the graph, where the peaks are around the 400nm and 600nm wavelengths, corresponding to blue and red in visible light.

This absorption means the pigment is 'excited' by this light, sending into a higher state if energy which provides energy for the reactions of photosynthesis.

7 0
2 years ago
1. How is the property of compressibility of gases used in everyday life? Give an example.
larisa86 [58]

Answer:

Compressibility is reducing the volume by increasing the pressure of a substance like liquid or gas. It is a physical characteristic of a substance especially gases.

Everyday life examples:

(1) LPG - These gas cylinders have compressed natural gas to liquid gas to store and use as fuels.

(2) Tubes of bicycles are filled by the pumps that compress the air.

(3) Carbonated soda filled with the help of compressing the carbon dioxide into the bottle.

4) oxygen bottles in medical institutes for helping the patient to breathe.

6 0
3 years ago
All living things must maintain a strict internal temperature. There can be serious consequences if the internal temperature dev
stealth61 [152]
I think the answer is B. Homeostasis.
5 0
1 year ago
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