Which of the following are not a cytoskeletal protein filament?
a. actin
b. intermediate filaments
c. primary filaments
d. microtubules

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f