Scientist believe that the first life form appeared over how many years ago

Biology what is the difference between artificial selection and natural selection? artificial selection acts on morphological characteristics, whereas natural selection acts on life history traits.

When performing a wall sit or squat (repeated motion with the squat) what major muscle groups are being used? What system do you think are interacting during the process

In which fields of earth/space science might scientists study the formation of hurricanes over the ocean? A. Geology and oceanographer B. Meteorology and astronomy C. Astronomy and oceanography D. Meteorology and oceanography

What does orange juice energy came from?

What is the Sun's apparent path through the sky in the northern hemisphere

When ATP delivers energy, it does so by breaking the bond between: Question 4 options: the adenosine group and the phosphate groups the second and third phosphate the first and second phosphate all phosphate groups

What structure acts as a gateway for sensory impulses before they reach the cerebral cortex?

Fracking is used to extract what? A) coal B) natura gas C) all of the above D) petroleum

How the combination of electrons, protons and neutrons results in a neutral charge of an atom?

2) Tay Sach's disease is a fatal genetic condition, in which affected individuals cannot metabolize fats properly. Children who inherit the disease rarely live past the age of five.