Question

6. Mention two ways in which animals cope with low temperature.
7. What is rectilinear motion?​

Answer 1

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6. One thing is also in the veins. If it's cold they shrink in order to have less surface through which they can transfer the heat. Plus, when it's very cold, body turns off some of the non-basic functions in order to be able to use the energy for heating.

7. Linear motion (also called rectilinear motion) is a one-dimensional motion along a straight line, and can therefore be described mathematically using only one spatial dimension.