Witch statements explain current theories about dark energy and Dark matter

One common system for computing a grade point average (gpa) assigns 4 points to an a, 3 points to a c, 1 point to a d, and 0 points to an f. what is the gpa of a student who gets an a in a 3 credit course, a b in each of two 2 credit courses, and a d in a 2 credit course?

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition