Organisms & their Relationships

What type of relationship does a mosquito have with a human?

• Commensalism

• Mutualism

• Parasitism

• Predation

• Competitive

An abiotic factor is a ___________________ factor in an organism's environment.

• nonliving

• living

A biotic factor is a ___________________ factor in an organism's environment.

A deer would be ________________ factor in its ecosystem.

• an abiotic

• a biotic

Water would be ________________ factor in an ecosystem.

• an abiotic

• a biotic

The sun is a(n) ____________________ factor

• biotic

• abiotic

An _____________________ is the lowest level of organization in the biosphere

• organism

• population

• biosphere

• ecosystem

If you were studying an African environment, and you saw a herd of elephants, what level of the biosphere are you observing?

• community

• organism

• ecosystem

• population

If you were swimming in a lake and saw fish, water plants, and frogs, you would be looking at what?

• population

• ecosystem

• organism

• community

If we were in the desert, and we studied the sand, rocks, lizards, cactus, and the snakes, we would be studying the entire desert _____________________________.

• community

• ecosystem

• population

• organism