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Jobisdone [24]
3 years ago
13

What is gravitational instability theory?

Biology
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

Gravity is considered to be one of the universal forces inherent of nature itself. Gravity is an attractive force between objects, which is proportional to the mass of the objects and inversely proportional to the distance between them. Gravity is what help planets follow an elliptical orbit, and is the reason why we can keep our feet on the surface of the earth.

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Explanation:

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2 years ago
Why do you think that root hairs are produced only on the parts of the root system that have stopped growing?
Triss [41]

Answer:

question no 1 answer

A root hair,or absorbent hair, the rhizoid of a vascular plant, is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. As they are lateral extensions of a single cell and only rarely branched, they are visible to the naked eye and light microscope. They are found only in the region of maturation of the root. Just prior to and during root hair cell development, there is elevated phosphorylase activity. Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. Another adaptation that they have is a large permanent vacuole.

question no 2 answer

Answer: Stems hold the plant upright and support it. They also transport water, minerals and sugars to the leaves and roots.

hope it helps

because i have taken it on by book

5 0
3 years ago
In what way is petroleum, a fossil fuel, distributed on Earth?
AleksandrR [38]

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7 0
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What is a blue moon
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The table below shows the number of chromosome pairs for various organisms.
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there is no table in the question

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