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Leto [7]
3 years ago
11

What three things are needed for a plant to

Biology
1 answer:
jeka57 [31]3 years ago
4 0
CO2, water, sunlight
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If a circle has a diameter of 16 feet, which expression gives its area in square
bagirrra123 [75]

Answer:

The options are unclear but the answer is 8^2π square feet or 64π sqfeet

Explanation:

Area of a circle is denoted by: πr^2 where r is the radius of the circle.

In this question, the diameter was given. The diameter of a circle is twice the radius. Therefore, in order to get the radius, we divide the diameter by 2 i.e. r = d/2

= 16/2 = 8 feet.

Thus, the radius = 8 feet.

Hence, Area of a circle = πr^2

= π × 8^2

= 64π or 8^2π sqfeet.

6 0
3 years ago
3. The core that Richard Oldem had discovered turned out to be the Earth's<br> I
I am Lyosha [343]

Answer:

The first layer is the crust, a skin of rock covering the planet. The core that Lehman had found was the Earth's inner core. The core that Richard Oldem had discovered turned out to be the Earth's outer core.

Explanation:

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2. Explain the relationship between genetic variation and an organism's ability to adapt to its environment,​
gogolik [260]
Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation. Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population.
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Which statement best summarizes Gregor Mendel's contribution to science?
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D. Mendel is considered the father of genetics.

This isn't really a contribution, but an acknowledgment, but the other options are all very wrong. 
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If a population grows larger than the carrying capacity of an ecosystem the, A.birthrate rises B. death rate rises C. birthrate
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If the population grows larger, than the death rate rises
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