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jeka94
3 years ago
6

Approximately what percent of the oxygen on Earth is produced through photosynthesis?

Biology
2 answers:
Fudgin [204]3 years ago
6 0

Answer:

50-85%

Explanation:

BartSMP [9]3 years ago
3 0
Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. A byproduct of photosynthesis is oxygen. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere.
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Look at the pic pls help
77julia77 [94]

Answer:

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Explanation:

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5 0
3 years ago
Read 2 more answers
Plzzz help with the one with the membrane picture
3241004551 [841]

Answer:

1.) The solute molecules will not move between the two sides because the membrane does not have large enough spaces for the molecules to move through. The water molecules will move to the right side because water moves to places of a higher solute concentration.

2.) The right side represents high concentration because it contains the majority of the solute molecules.

3.) The left side represents low concentration because it contains a small amount of solute molecules compared to the right side.

7 0
3 years ago
What causes an ionic bond?
Keith_Richards [23]

Answer:

B

Explanation:

An ionic bond is formed when an atom usually metallic, loses an electron to become positively charged and another atom usually non-metallic, gains such electron lost and becomes negatively charged..

3 0
3 years ago
In the family tree below, people with the recessive trait of attached earlobes
madam [21]

Answer:

C. It is a male with atleast one dominant allele

Explanation:

In the given pedigree, the two normal parents of the generation I have one daughter with the attached earlobe. Since the trait is recessive, the daughter should be homozygous recessive to express the trait. The genotype of the daughter (shaded circle in generation II) is "aa". To have a daughter with "aa" genotype, both the parents should have one copy of "a" allele. So, the genotype of both parents is "Aa".

In generation II, individual A is non-shaded square. Squares represent males in a pedigree. Since its not shaded, it does not have attached earlobe. Both the parents are heterozygous dominant for attached earlobes (Aa x Aa = 1/4 AA : 1/2 Aa : 1/4 aa). The genotype of this individual may be AA or Aa.

5 0
3 years ago
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Tom [10]

Answer:

A Recessive

Explanation:

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4 0
4 years ago
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