State the effect of weather on humans activity​

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation