Current cell theory:
1) mitochondria are found only in animal cells
2) cells are very different in structure from one cell to another
3) chloroplasts are found in all cells
4) other than the very first cell, cells come from preexisting cells

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above