Final answer:
An organism that tends to have a low life expectancy and increased birth rate is known as a r-strategist.
Step-by-step explanation:
An organism that tends to have a low life expectancy and increased birth rate is known as a r-strategist. These organisms prioritize reproduction over survival and have a high rate of population growth. They often have short lifespans and produce a large number of offspring. Examples of r-strategists include many insects, small rodents, and certain fish species.
Learn more about r-strategist