Answer:
Oils repel water, so it helps these animals keep their fur dry, which helps them stay warm.
Answer:
It helps us to see things.
It helps plants to make food and grow.
It is used in power satellites and space stations.
It is used in many electronic appliances.
The energy of light from the sun can be harvested to solar panels and can be used for domestic use since it is eco-friendly and cost effective too.
Explanation:
Answer: it is difficult because it is necessary to understand some concepts used in a system. For example what is a boundary, and environment which can be positive or negative, etc. A sample could be the course OpenLearn that provides an example of Computing & IT.
Explanation:
Answer:
A's T's C's and G's
Explanation:
Adenine, Thymine, Cytosine, and Guanine