4. The environmental problems created late in the twentieth century are
a. impossible to solve.
b. partly a result of increased
human population.
c. not as bad as those created early in
the twentieth century.
d. both a and b above

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

What must be done to breed dogs for a partical trait