Spiders create their webs on the stems and trunks of trees. The tree is unaffected by the spider web. 1.predation
2.commensalism
3.parasitism
4.mutualism

What state of matter is ice a. liquid b. element c. solid d. gas

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.

An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8