Which choice below is an scientific observation? 1. baby's are cute. 2. baby's prefer the mother. 3. zibras and elephants dislike lions. 4. the average temperature during the summer in michigan is 79 degrees.

The shift of a vehicle's weight around its center of gravity is known as

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions