Many organisms in an ecosystem compete with each other for resources. What might different species of trees in a forest ecosystem compete for?

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

What substance has a mass of 9.5g and volume of 2.1cm^3

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.