A student ran several test on compound A and got the following results: 1)Benedict solution was blue after mixture and heat 2) lodine Solution was brown after mixture 3) Biuret Solution was violet after mixture 4) brown paper bag remained dull The student did further research and discovered that compound A can be found in large quantities in meats and muscles. Question: Which macromolecules are most likely present in compound A? Claim: Evidence : Reasoning :

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What is the surface temperature of the ocean where hurricanes form? greater than 80 celsius approximately 27 celsius at least 76 celsius less than 10.5 celsius