Which of the following scenarios represents a density independent limit on population?
Porcupine population growth is limited by the spread of disease
Box turtle population growth is regulated by a hurricane that destroys their
nests
Woodpecker population growth is regulated by opossum predation of
woodpecker eggs
Caribou population growth is limited as a result of grass depletion

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .

Both carbohydrates and fats are used as fuel in cells. true or false