5.2+Limits+to+Growth

limiting factors desnity dependent limiting factors density competition predation  * This is when one animal kills another for food. * In the predator-prey relationship of wolves and moose, wolves are predators and moose are their prey
 *  Helps control populations in nature-with a predator-prey relationship
 * Examples:
 * Eventually if the population of moose decrease the population of wolves also decrease because the wolves loose food.

PARASITIMS- symbiotic relationship in which one organism (the host) and consequently harm it. *the parasite receives all the nutrients of their host  *eventually, however, if a parasite stays on its host long enough it can kill them *Parasites live off the host's blood, nutrients, skin, intestines, etc. **EXAPMLES** ~tapeworms ~fleas ~ticks ~lice
 * generally, parasites weaken their hosts, but don't kill them**