What can cause a population to grow

It can be a number of factors that can cause a population to grow. It can depend based on the birth rate, death rate, immigration, and emigration of the species. Additionally, it can also be how well the species adapts to it's environment.

hope that helps :-)

what are the options

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.