<span>150-200 species of plant, insect, bird and mammal become extinct every 24 hours., according to the Scientist Estimate. </span>
The body structure ( ovaries, testes, and external genitalia) that make sexual reproduction possible. Secondary spermatocytes
<span>The light of color, and the type of plant would be controlled variables. The growth rate would be the dependent variable, and the independent variable would be the amount of light.</span>
