What does relative fitness measure?
What will be an ideal response?
the actual contribution of offspring to the next generation
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Although females prefer males with the longest tails, very long tails are typically not found
among males in their natural environment. Why might this be the case?
a. Male birds with very long tails are easily captured and eaten by predators, so they do not survive to reproduce. b. Male birds prefer having shorter tails. c. Mutations have kept tail lengths from increasing. d. There is no advantage to having increased tail length in the natural environment.
The movement of organic compounds throughout plants is described as ____.
A. cohesion-tension B. source-to-sink C. facilitated transport D. active transport E. transpiration pull
Cerebrospinal fluid circulates in the ________ to deliver nutrients to the brain and spinal cord
A) dura mater B) arachnoid villi C) cranial sinuses D) subarachnoid space E) pia mater
Homo habilis was the first hominid to use fire.
Answer the following statement true (T) or false (F)