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Daniel [21]
3 years ago
12

A physiological ________ is a difference in chemical concentration, electrical charge, physical pressure, temperature, or other

variables between one point and another.
Biology
1 answer:
skad [1K]3 years ago
5 0
<span>Gradient. A gradient, in the biological sense, is a series of progressively increasing or decreasing differences in the growth rate, metabolism, or physiological activity of a cell, organ, or organism.</span>
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Which type of star cluster forms from tightly packed groups of older stars?
Andrews [41]
<h2>Answer:</h2>

The correct answer is option C which is globular. And the correct statement is:

<u>Globular star cluster forms from tightly packed groups of older stars.</u>

<h3>Explanation to the answer:</h3>
  • In the galaxies, stars are clustered in different patterns making different types of groups in the galaxies which can be recognized.
  • There are one type of clusters which are spherical in shape and tightly packed due to gravity and they also move around the satellites. These clusters are known as globular star clusters.
  • Hence option C is correct one.
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(c) i just took the question

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If water had weak surface tension, insects would not be able to land on or walk on water.

Surface tension is the force acting on the surface of water that makes it to behave like a stretched elastic skin.

Surface tension owes to the intermolecular attraction between water molecules. The molecules at the surface of water are drawn inwards by other molecules causing the molecules at the surface to contract. This surface tension enables insects to land on or walk on water.

So, without surface tension of water, insects would not be able to land on or walk on water.

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