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Strike441 [17]
3 years ago
6

A student made this model using paper molecules and a piece of yarn.she wants to show how simple transport works.

Biology
2 answers:
Minchanka [31]3 years ago
6 0

Answer:

b

Explanation:

to balance the concentration

lbvjy [14]3 years ago
3 0
I think it’s B because it’s outside cell
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Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, calcium, potassium, magnesium
serg [7]

Answer:

Magnesium, calcium, phosphorous, sulfur these are essential nutrients for plants. These are required in trace quantity but are very important for plant life. Point A. will be correct answer.

Explanation:

As in B. starch n cellulose are composed of only carbon, oxygen and hydrogen.

As in C. These elements are not required on special occasion but are necessary throughout plant life.

As in D.  C H N O  is the primary component plants need but these secondary nutrients are equally necessary for growth n structure of plant.

<u><em>So answer A. Is the correct option.</em></u>

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Sulfur is another very important element in plant life, it is necessary for protein synthesis in plants.

Phosphorous plays an important role in  process of cell devision , photosynthesis and respiration.

Potassium is very crucial in gaseous exchange ,it operates the opening and closing of stomata.

3 0
3 years ago
What factor made evolution more very slowly for the first two billion years of life on earth?
marusya05 [52]
It was an asteroid that came to earth two billions years ago and scientists says that there might be another one coming.so we might live in space for a couple of months or years. so that why the dinosaur die.
8 0
3 years ago
9)
r-ruslan [8.4K]

Answer:

Its B I think (I'm not 100% sure)

Explanation:

3 0
3 years ago
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