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ss7ja [257]
3 years ago
15

Natural resources are materials from the earth and are either renewable or nonrenewable. Some of these resources are recoverable

after their first use. An example of resource recovery is A) mining of coal. B) extraction of petroleum. C) production of greenhouse gases. D) composting plants and food wastes.
Biology
1 answer:
Mice21 [21]3 years ago
5 0

Answer:D composting plants and food wastes.

Explanation: You may compost it but you are reusing it to feed plants or animals

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Which of the following is a function of the cell membrane?
Vika [28.1K]

Answer: provides protection and transports nutrients

7 0
3 years ago
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the cells on light 14N medium for many gen
Effectus [21]

Answer:

One band of light density and one band of heavy density.

Explanation:

According to conservative model of replication, the original strands do not separate from each other during replication. Hence, after replication the old strands are together and the new strands are together.

Here, cells were grown in 14N medium first so 14N was used for DNA replication and all DNA molecules had 14N. When the cells were transferred to 15N medium, only 15N was available for replication process. New DNA molecules would be synthesised using 15N (15N15N) and old DNA molecules have 14N (14N14N). Hence, in density gradient one band will be of light density (14N14N) and one band will be of heavy density (15N15N).

5 0
3 years ago
Which are limiting nutrients for plant growing
poizon [28]

Answer:

I believe it is : water and nitrogen

Explanation:

6 0
3 years ago
Edith and her pal Dave love to catch butterflies in the nearby fields! The fields are home to a special type of green butterfly
wlad13 [49]

Answer:

The probability of obtaining a "goober" butterfly is 6.25%

Explanation

If there are three possible combinations of butterflies, with yellow and blue being dominant, green is supposed to contain a recessive pattern, so according to Mendel's law of character independence, the pattern RR and BB manifest the dominant phenotype yellow, blue or yellow and blue in spots, the green pattern must be recessive is represented by the letter a, the punnett graph is made, obtaining that 56% present a dominant pattern, 37.5% will be spotted and the pattern recessive must match to generate 6.25% of butterflies “goober”.

6 0
3 years ago
In the ecological pyramid organism A represents
Nina [5.8K]

Answer:

photosynthetic organisms

Explanation:

These are autotrophs organisms that use carbon dioxide and water, and with the help of solar energy, they produce nutritive material and release oxygen.

This is known as the process of photosynthesis and it is done in the organs of the plants that contain chloroplasts.

7 0
3 years ago
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