Delivering single shocks in succession to stimulate the frog heart .
a. increased the height of the ventricular systole wave
b. resulted in fused tetanus
c. resulted in wave summation
d. did not increase the height of the ventricular systole wave

One gene can influence trait(s). one trait can be determined by gene(s).

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

The function of the excretory system is to control homeostasis and