What is natural selection?

Those best suited to demands of environment survive

The weakest of a species surivie

Nature actively chooses who survives

Your natural fate is decided from birth

In what kind of environment might you find a leaf with a very thick cuticle

Which explains why the reflex reaction is important in certain situations? O A. Motor neurons cannot form action potentials. O B. The brain has no control over motor neurons. O C. Interneurons are too slow at sending signals through the spinal cord.

A parasitic way of life can be best demonstrated by the feeding adaptations of the A) earthworm. B) leech. C) shark. D) spider.

Fellowship training gives a physician further specialization skills within his chosen field of medicine. true

If someone told you that a blade of grass, the sun, the air you breathe, and your body were composed of the same incredibly small particles, would you believe them?

Which stage of sleep is particularly important for learning and memory processing?

Early microbial ecologists knew that hydrogen gas is oxidized in soil and that ammonia is oxidized in sewage. How did these scientists determine that microbes are responsible for these ecological reactions? Choose one: A.

If more genes for less arm hair are passed on more frequently after several generations will people have more or less arm hair?

What kind of tissue is the precursor of long bones in the fetal skeleton?

Why are old rocks rare on the ocean floor