Pandemics occur over a wide geographic region, potentially affecting a large population.
Answer:
The digestive system ingests and digests food, absorbs released nutrients, and excretes food components that are indigestible. The six activities involved in this process are ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.
Explanation:
hope this helps
Answer:
The precise definition of pH is "the negative common logarithm of the activity of hydrogen ion in solution". For practical purposes, the activity is approximated as concentration in moles/L: pH = - log 10 ([H+]) .
Explanation:
I thought of it as that the black walnut trees will thrive better than plants nearby as the toxic chemicals produced by the trees can harm or make it more difficult for other plants to thrive
Natural selection? Not sure if this helps but.. " A trait that gives the individual an advantage in survival or reproduction, given under a circumstance" sorry if im wrong ]:
