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lisov135 [29]
3 years ago
8

What is the major source of air pollution today?

Biology
2 answers:
erma4kov [3.2K]3 years ago
6 0
Big trucks and all motor generated machines or automobile vehicles are the major cause for air pollution. Smoke coming from the pipes that go down to the engine and come up through the pipes burst into he air, making air unhealthy and more dangerous in the big cities. 
sveta [45]3 years ago
5 0
Oil and gas, that type of thing I think
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secreted by the gonadotropic cells of the anterior pituitary gland, and regulates the development, growth, pubertal maturation, and reproductive processes of the body

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Pea plant clones are given different amounts of water for a three week period.
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Answer:

independent variable: the different amount of water

Explanation:

The independent variable would be the <u>different amount of water supplied to the pea plant clones.</u>

<em>The independent variable is the variable inputted by the researcher during an experiment whose value directly affects the dependent variable. It is the variable that is manipulated during experiments in order to see the kind of effects they produce on another variable - the dependent variable.</em>

In this case, <u>the amount of water supplied to each pea plant would directly affect the height of the pea plants.</u> Hence, the amount of water supplied to the pea plants is the independent variable while the height of the plants is the dependent variable.

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State two specialised cells found in plants​
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xylem cell and phloem cell

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A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic
kati45 [8]

So, you would make a punnet square. You would put the capital S and lowercase s on the top of it and then the capital Y and lowercase y on the side. Then you should have SY, sY, Sy, and sy as your outcomes.

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