Could life as we know it exist if the air on earth only contained oxygen?

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

What does natural resource management aim at ?

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.