When a ball at the top of a hill starts to roll down, what energy transformation occurs?

A graviational - > kinetic - > light

B kinetic - > graviational - > thermal

C gravitational - > kinetic - > thermal

D thermal - > graviational - > kinetic

As the angle of the Sun's rays striking Earth flattens out at a particular location, how does this affect the amount of solar heating at that location? A) Solar rays are less spread out and less intense.

Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?

Socialism is the dominant economic force in the world today. true or false?

Usually it is not possible to penetrate inside a body cavity without cutting through protective tissues. However, sperm reach the egg via the vagina, uterus, and fallopian tubes (oviducts).

What is the last universal common ancestor?

Fossil records suggest major changes in early vascular plants that favored the evolution of land plants. Which was one of these major changes? Select one of the options below as your answer: A. Development of fruit B. Development of seed C.

Many people in the developing world who depend on rice in their diet suffer from diseases related to deficiencies of

Why does biology have to be a subject

Differential reproduction of genotypes leads to evolution via what process? inbreeding natural selection genetic rescue genetic drift mutational load

Why is carbon essential to all known life on Earth?