If you follow the longest food chain in the food web below from grass to owl, how many trophic levels are there?
grass
aspen
grasshopper
rabbit-fox
frog
#snake
owl
o
A. Three
B. Five
C. Four
D. Two

What is the most appropriate method of gaining weight (muscle mass)

Drag each label to the correct location in the equation. not all tiles will be used. the density of mercury is 13.6 grams per cubic centimeter. complete the steps for converting 13.6 g/cm3 to kg/m3. (1 kg = 1,000 g, 1 m3 = 106 cm3)

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.