Answer:
An increase in available food is an environmental factor which brings about genetic variation in the population of a specie.
Explanation:
longer than those emitted by the sun
Explanation:
The earth's surface emits primary wavelengths whose wavelengths are longer than those emitted by the sun.
They are called long wave radiation because they are less energetic and have longer wavelength higher than those visible light.
- most of the radiation emitted by earth surface is the infra-red region.
- when this radiation enters the atmosphere back, it causes the warming of the troposphere.
- The sun emits energetic short wave radiations.
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Answer:
The extracellular material of a tissue is called the <em><u>Matrix</u></em>
A model is a way of describing natural phenomenon that scientists uses to make various prediction.
Explanation:
A model is said to be good if it is both accurate as well as easy to understand which makes powerful as well as simple. Most of the models have certain approximation those are necessary for describing a model. As the observations are not exact so there may be little difference between what we observe. Models which are simple increase the accuracy and becomes superior in nature as well.
There are certain limitation of model such as , most of the model cannot explain the complex natural phenomena. For example when we want to measure distance it becomes difficult ,in the model we can represent earth as a sphere but it is difficult to show variation in distance as there are valleys mountain ranges and other features.
A change in species structure