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Hookworms enter the human body by burrowing into the skin of the feet. Once in the skin, they enter the bloodstream and travel to the small intestine where they attach to the walls and begin to drink the person's blood and weaken the victim.

• mutualism

• commensalism

• parasitism

A snake is eaten by a hawk. The hawk is the _______.

• prey

• parasite

• predator

• all of these

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism 

• Competition

• Parasitsm 

• Commensalism 

What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.  

• commensalism

• mutualism

• parasitism

• predation

A relationship between two organisms in which both organisms benefit. 

• Mutualism 

• Competition

• Parasitsm 

• Commensalism 

In a parasitic relationship, one organism is ______ and the other organism is benefiting.

• benefited

• harmed

• unaffected

Food, water, sunlight, shelter, and space are resources that are  __________.

• limiting factors

• wet

• messy

• found in rocks

Tags

NGSS.MS-LS2-1

If the population of a certain predator increases, there is often _______ its prey

• a decrease the population of

• an increase of the population of 

• great news for its prey of

• no  impact found on

Tags

NGSS.MS-LS2-4

If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

• The bird population would stay the same

• The bird population would infinitely increase

• The bird population would decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4