Answer:
It's important for a scientist to try to hold all variables constant except for the independent variable. If a control variable changes during an experiment, it may invalidate the correlation between the dependent and independent variable. When possible, control variables should be identified, measured, and recorded.
Answer:
A-Shelter, the others are for enjoyment while shelter takes care of your physical state
<span>Compared with developing countries, developed countries have high birth rates. - This statement is not true.
</span><span> With the help of family planning and education, birth rates can be decreased. - This statement is true.
</span><span>If the trend of rising birth rates continues, the population will increase and natural resources will likely start becoming scarce. - This statement is true.
</span><span>When food resources disappear, it eventually leads to food security in certain regions of the world. - This statement is false.</span>
A monhybrid cross is the inheritance of a single character and dihybrid cross is the inheritance of two difference character.
