Select all that apply.
which of the following are not abundant elements in the body?
a) hydrogen
b) boron
c) copper
d) oxygen
e) nitrogen

Look at the photo of the leaf. which term best describes this leaf?

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?