Ascientist is studying the natural feeding habits of tigers.

in order to obtain the best data, which approach should the scientist use?

a. perform tests in the laboratory
b. observe tigers in the zoo
c. observe tigers in the wild
d. set up controlled experiments

Why do cells appear different in distilled water than they do in 10% salt water?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum