What has the size of the human population done to the number of available habitats over the past 100 years?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

The production of cells during mitosis into specialized function is recombination or differentiation