More advanced than tools used on earth
An experiment or survey must be controlled in order to receive accurate results.
In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
Answer: angular distance north or south from the celestial equator measured along a great circle passing through the celestial poles
Explanation:
Answer:
The nucleus is found in both plant and animal cells along with the vacuole
Explanation:
The answer is A, 'a mammal' because it goes with the copulative verb 'to be', i. e., 'is'.
