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Step2247 [10]
3 years ago
9

Plzzzzzz help me

Biology
2 answers:
Katyanochek1 [597]3 years ago
8 0
The answer is A !!!!
Anna35 [415]3 years ago
3 0
The answer i believe is A.
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What wavelength of light is used most efficiently by plants for photosynthesis
Andrei [34K]

Answer:

The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.

Explanation:

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Which kind of diagram shows the amount of organic matter in the trophic levels of an ecosystem?
wariber [46]

Pyramid biomass 

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3 years ago
An astronomer see a star that is very far away but still very bright. What can she conclude about the star?
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3 0
3 years ago
Read 2 more answers
NEED HELP ASAP!! PLEASE HELP!!
Flauer [41]

Answer:

1. The Diet Pills

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3. The plant being watered with tap water

4. 8 Trials were included

Explanation:

1. An independent variable is the variable that you change

2. The dependent variable is what you are measuring, in this example the height of the plant

3. This is what you use to base your conclusion on. In this test they are seeing if diet pills affect the height of the plants. So a plant with no diet pill is the control

4. The results were taken at the end of the week for EIGHT weeks. 8 Trials.

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2 years ago
Mutations in_ cells cause mutations to be passed on to the next generation
marysya [2.9K]

Answer:

TRUE

Explanation:

8 0
3 years ago
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