Global warming is closely associated with

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

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

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome