16. Which of the following could describe a population that is decreasing in size?
The birth rate and death rate remain the same
The death rate is becoming lower than the birth rate
The death rate is constant and the birth rate is increasing
The death rate is becoming higher than the birth rate

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.

Number and variety of living organism; includes genetic, species, and ecological types

How do demetri's results show that digestive enzymes are crucial to maintaining homeostasis inside the body?