Which condition is essential for natural selection to result in a new species

A. Unlimited resources

B. An inherited variation

C. A static environment

D. A long life span

Drowsiness affects your senses especially your

an unfertilized egg cell has 6 chromosomes. after fertilization, how many chromosomes should the zygote have?

Why can the sphenoid bone be called the keystone of the cranial floor?

What are three pieces of evidence you would use to prove something is living?

Which statement best describes cancer cells? A. They grow as a single layer of cells. B. They cease to reproduce after 20-50 mitotic divisions. C. They reproduce only when needed to replace missing cells. D.

Description and function of a phospholipid

English maths biology physics account

Hallie and Jamar built a prototype bridge for a science competition. According to competition guidelines, their final design must hold at least 2 kilograms and span a gap of 0.5 meters. They built a bridge that is 0.75 meters long.

Some hazardous waste is disposed of by deep-well injection. This procedure Select one: a. All of the above b. pollutes the wells and water supplies of nearby residents. c. violates federal law. d.

Which instrument should give the most accurate measurement of water temperature