11	Which of the following is a living factor in the environment?							A) Animals
12	What is made up of all the populations in an area?								C) Community
13	What does the number of individuals in a population that occupies an area of a specific size describe?		D) Density
14	Which of the following animals is an example of an herbivore?	     	       		     			D) Rabbit
15	What term best describes a symbiotic relationship in which one species is helped and the other is harmed?	B) Parasatism
16	Which of the following conditions tends to increase the size of a population?	     	       	  		A) Births exceed deaths
17	Which of the following is most likely to be a limiting factor in which a population of fish living in the shallow water of a large lake? B) Water
18	In which of the following categories does the pictured organism need organism belong?  	    	      	  	C) Producer
19	Which pair of words is incorrect?    	      	       		     	      					B) Grasshopper - Herbivore

20	Infer why a parasite has a harmful effect on the organism it infects.
	      A flea hangs on to the organism it infects (such as a dog) and eats the organism. Similar for other parasites.
21	Explain what factors affect carrying capacity.
		The amount of food available; how many organisms are eating the food; where the organisms can live; how many organisms there are living; the amount of water available; the amount of organisms drinking the water.
22	Describe your own habitat and niche.
		 I live in the middle of a forest, in a relatively large house (in New Brunswick). I eat food that we buy from Costco.
23	Copy and complete the following table.
	     ORGANISM A	  ORGANISM B		RELATIONSHIP
	     Gains    	  Doesn't gain or lose	Commensalism
	     Gains	  Gains	       	  	Mutualism
	     Gains	  Loses			Parasitism
24	Explain how several different niches can exist in the same habitat.
		Let's say our habitat is a forest floor. There are MANY animals here, each with a different niche - bugs live there in the ground; plants live there; many other creatures do too.
25	Make a model of a food chain using the following organisms: grass, snake, mouse, and hawk.
	     Hawk < Snake < Mouse < Grass
26	Dandelion seeds can float great distances on the wind with the help of white, featherlike attachments. Predict how a dandelion seed's ability to be carried on the wind helps reduce competition along dandelion plants.
		  The dandelion seeds can get around very easily, making them be able to be spreaded about a lot. Since they are all spreaded out, it's much less crouded.
27	Classiy the following relation ships as parasatism, commensalism, or mutualism:
		A shark and a remora fish that cleans and eats parasites from the shark's gills: MUTUALISM
		Head lice and a human: PARASATISM
		A spiny sea urchin and a tiny fish that hides from predators by floating among the sea urchin's spines: COMMENSALISM
28	Compare and contrast the diets of omnivores and herbivores.
		Omnivores eat meat; herbivores don't. Omnivores eat leaves and fruit and vegetables; herbivores do. An example of an omnivore: people, who are mostly omnivores (with the exceptions of vegetarians). An example of a hebivore: A girrafe, which loves the tree top leaves.
29	List three ways exponential growth in the human population affects people's lives.
	     The more people there are, the more food there needs to be to feed people.
	     The more people there are, the more homes there needs to be to feed people.
	     The more people there are, the more diseases can get around.