Look at the energy pyramid shown in the lesson. Suppose a trout eats a smelt and then a human eats the trout. About how many of the original 1000 calories contained in the algae reach the human? How does this compare to a situation in which the human ate the smelt directly?

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Can someone i have no idea of how to do this.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell