The change in life-forms in the fossil record from less complex organisms to more complex organisms over time is best explained by

(1) extinction

(2) evolution

(3) dynamic equilibrium

(4) original horizontality

Which East Asian country remains poorly developed and isolated under a Communist regime? A. South Korea B. Taiwan C. North Korea D. Japan

According to Darwin's theory of evolution, in which order do the steps of natural selection happen?

A Archaeologist would most likely explore

How does the rate of groundwater flow compare with that of ocean currents or river currents?

How does the sun, which is a ball of gas, maintain a spherical shape? A. The nuclear energy pulls the gas in, and gravity pushes the gas out B. The nuclear energy pushes out and the gravity pulls it is C.

Which of the following is the adaptation that allows Animals to survive in high altitudes that contain lower levels of oxygen?

Why is millet grown in the Sahel? a) It tastes better than wheat or barley. b) It is cheaper to grow than wheat or barley. c) It requires less water to grow than other grains. d) It has a longer cultivation cycle than other grains.

A fold in rock that bends upward into an arch is called a?

How thick is the worlds atmosphere

Witch religion first gained poularity as a part of roman empire in the 4th century