10 points What is an abiotic or biotic factor that controls the number of individuals in a population called?
A. a food,
B. a niche.
C. a pollutant.
D. a limiting factor,

What must be done to breed dogs for a partical trait

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false