Finding an abundance of iridium in the K–Pg boundary sequence worldwide pointed to evidence that this layer was of
____ origin.
a. carbon
b. organic
c. geologically recent
d. prehistoric
e. extraterrestrial
ANSWER: e
You might also like to view...
The carbonic acid and bicarbonate buffer in blood is extremely important to help maintain homeostasis. What would happen to the pH of the blood if bicarbonate were removed?
A. Removing bicarbonate from the blood would not affect the pH. B. Removing bicarbonate from the blood would increase the pH. C. Removing bicarbonate from the blood would decrease the pH.
Which part of the brain adjusts the rate and force of the heartbeat based on the information received from arterial stretch receptors (baroreceptors)?
1.Cerebellum 2.Cortex 3.Medulla 4.Midbrain
If a population of 2000 individuals has 120 aa genotypes, what would the genotype frequency of aa be?
a. 0.006 b. 0.06 c. 0.6
d. 1.6 e. 16
Ethylene
A) stimulates seed germination. B) causes phototropism. C) promotes leaf and fruit drop. D) prevents leaf senescence. E) promotes gravitropism.