1. Classify the following as biotic or abiotic.• Sunflower___Biotic______________• Water___Abiotic________________________• E.coli bacteria__Biotic ___________________• Bird feather_Abiotic__________________• Humans______ Biotic ___________________• Pine tree_____Biotic____________

2.

3.

• Autotroph - sun/photosynthesis - plants, flowers

• Omnivore – plants and animals – raccoon, birds

• Carnivore – animals only – wolf, fox, hawk

• Herbivore – plants only – deer, some insects

• Decomposer – dead or decaying – fungi, bacteria

4.

Autotroph Heterotroph Heterotroph Hetertroph

Decomposer/Herbivore Omnivore Carnivore

10,000 cal 1,000 cal 100 cal 10 cal

5.

• Commensalism- one organism benefits, the other is not affected

• Mutualism – both organisms benefit

• Parasitism – one organism benefits, the other is harmed

6.

• Algae growing on aquatic turtles – C

• A tick living on a deer – P

• Honeybee pollinating a flower– M

• Mistletoe growing on a pine tree– P

7.

• Biotic or abiotic factors that restrict reproduction.

• They keep a population in check.

8.

• The _____________ of a species describes the trophic function it fills in its environment.

• Niche

9.

• ________________ species are species that are not native to the area they live in.

• Invasive or exotic

10.

• The carbon cycle is the movement of carbon from the atmosphere to the earth and back (continuously). The higher your carbon footprint, the greater impact you have on the carbon cycle.

• Photosynthesis- carbon in

• Decomposition- carbon out

• Respiration- carbon out

11.

• More snakes and hawks, less grass

12.

• Trees, grass

13.

• Decomposers- break down dead or decaying matter

14.

• It’s a heterotroph- an herbivore specifically.

• It competes with crickets, is food for snakes and hawks

15.Population Size vs. Year

0

20

40

60

80

100

120

140

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5

Year

Po

pu

lati

on

siz

e (1

00's

)

Series1

Series2

16.

• #2

• Not exponential, the population seems like it is at carrying capacity because of limiting factors

17.

• #1

• It is exponential with ideal conditions

18.

• #2

• Slow, larger organisms, takes a long time to mature and reproduce.

19.

• #1

• Quick growth and reproduction

20.

• Eventually, limiting factors set in and deaths > births.

21.

• Biodiversity is the variety of species in a given area.

• Biodiversity is low (only 2 species) in this example.