What happens to an ecosystem if less food is available?
It will decrease.
100
Which are/is biotic?
A. predators B. animals C. water D. plants
A, B, D
100
mushroom
decomposer
200
The part of the experiment that is different in one bag than in the other is the ___ of the experiment.
variable
200
Which is not a producer in an ecosystem?
A. human being B. algae C. bacteria D. plant
A
200
Sunlight, water and Carbon dioxide are:
abiotic
200
What animal in the food web on the board is both predator and prey?
snake
300
What was controlled in your experiment.
any reasonable answer
300
Quantity of light and water, temperature, and soil composition are ___ in their ecosystem.
abiotic factors
300
Which is abiotic?
A. Bacteria that can spread disease B. Surplus or and deficit of water C. Amount of living food available
D. Predators hunting prey
B
300
When observing an investigation comparing nesting sites of a bird species, a scientist sets up a camp under a tree where two species of bird are nesting. What is the trouble with this investigation?
You will desturb the bird.
400
What was one safety precaution we observed for this experiment?
The bags stay sealed. We do not use mayo, meat or eggs, because they grow harmful bacteria.
400
How many tropic levels are in the food web on the board?
5
400
What abiotic factors do plants need?
water, sunlight, carbon dioxide
400
Name two types of decomposer in any land ecosystem?
fungi and bacteria
500
What organisms are we hoping to culture as the dependent variable of this experiment?
fungi and bacteria
500
List 3 organizations including ecosystem. (p.49)
Population, Community, Ecosystem or a similar list.
500
Which is abiotic?
A. bacteria that causes disease B. new species that causes competition
C. lightning that causes a fire
D. decomposers that cause decay
C
500
What sinks and moves toward the equator because it is cold and more dense than its surroundings?