Which of the following occurs during systolic pressure?
a. The ventricles contract.
b. The atria contract.
c. Both the ventricles and atria contract.
d. The heart is at rest.
A
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Forks, Washington receives about 270
centimeters of rain per year. On the other side of the Olympic Mountains only 70 miles away, Sequim, Washington receives about 40 centimeters of rainfall per year. Both are close to major bodies of water and at the same elevation. What is the most likely reason for why there is such a large difference in rainfall between the two towns?
a. Sequim is probably at a latitude closer to 30 degrees while Forks is probably at a latitude closer to 90 degrees b. Sequim is in the rain shadow of the Olympic Mountains c. Sequim probably is receiving a higher amount of solar radiation than Forks d. the ocean near Sequim is drier than the ocean near Forks e. none of these answers are plausible
The tube feet of a sea star
a. bear tiny toes. b. are located only at the tips of the arms. c. function in movement. d. protect the organism from predatory fish.
Small lakes and ponds usually lack a profundal zone
____________________ Indicate whether the statement is true or false.
The first system to develop in the vertebrate embryo is the:a
circulatory system. b. digestive system. c. excretory system. d. reproductive system. e. nervous system.