As one moves through the state of michigan, there is a change in predominant trees species. there are hardwoods in the south (a.): pines and spruce in the north ( the opposite is true for the state of georgia. there are pines in the south (coastal plains) and hardwoods in the north (piedmont). what is/are the key determining factors in this tree species distribution? a) elevation and temperature b) average annual precipitation c) soil type and available water d) biodiversity of animal species

A) elevation and temperature Explanation:Due to the mountains-to-the-sea topography of Georgia, Georgia has a wide spectrum of natural vegetation. Trees ranges from maples, hemlocks, birches, and beech near Blairsville in the North to cypresses, tupelos, and red gums of the stream swamps below the fall line and to the marsh grasses of the coast and islands.Exploitation of these trees for pulpwood is a leading economic activity in Georgia.

On the other hand, Michigan's tree distribution is determined by climate, soil and topography effect.

The correct answer is B) Since eggs are energetically expensive, they tend to be the limiting resource in reproductive systems.

Explanation:

Bateman's principle suggests that a male have more reproductive success variability than females because male can produce million of sperms in a single time with a less expense of energy while females invest more energy for producing small amount of eggs and offspring.

So a male can become a parent of many offspring as compared to females who can become a mother of only some offspring because a male can fertilize all-female eggs of a female but a female can only give rise to few offspring in his lifetime.

Therefore females act as limiting resource in many species because eggs are energetically expensive than sperms so male competes for females for mating.