Which of the following describes Malthus’s theory of a positive check that holds populations within resource limits? they raise the death rate
they skew the age structure
they keep the population balanced
they decrease the child mortality rate

People need to distract themselves with actitives. they can also find a natural high. an example would be eating alot of meat. that meat can release dopamine to the brain which gives one a natural high feeling.

You can always get a sexually transmitted disease. always ask for consent before doing anything..because you never know if your bf or gf has an std!

Ican only answer your first question, a machine is like a human body because it's a little similar. they both almost work like the same.

Some of their responsibilities are to evaluate safety, efficiency, and effectiveness of the biomedical equipment. train people on how to properly operate biomedical equipment. lastly is to research the engineering aspects of the biological systems of humans and animals.