1) Explain how extracellular signals can create a fast, or slow response in cells and provide one example of each. 2) Which pathway(s) need to be altered in order to turn a normal cell into a cancer cell?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

The distribution of related animals and plants across the world