Question 1

Question

A) How could wildfire immediately impact competition in a forest ecosystem? (1 point)
Competition would remain the same. Wildfire would increase the scarcity of resources and decrease
individuals competing, effectively balancing each other out.
Competition would decrease. Wildfire would decrease the number of individuals competing for
resources, making more resources available per individual.
Competition would decrease. Many ecosystems rely on wildfire to restore nutrients and germinate
seeds; therefore, wildfire would increase resources available, lowering competition.
Competition would increase. Wildfire would increase the scarcity of resources, causing individuals to
compete at higher rates.
Question 2
A) Two prides of lions compete with one another for the same prey (antelope). Which scenario
would cause a decrease in competition? (1 point)
A disease kills individuals from the lion population.
Wildfire kills many antelope and some lions.
An invasive species outcompetes and replaces antelope.
Drought reduces the water available for all species.
Question 3
A) Which habitat’s decline may reduce the long-billed curlew population? (1 point)
forest
grassland
pasture
crop fields
Question 4
A) Twenty years ago, a gardener counted 50 monarch butterflies in her backyard. Assuming her area
reflects the overall population trend, approximately how many monarch butterflies will she count this
year? (1 point)
50
10
100
20
Question 5
A) How do high temperatures affect corals? (1 point)
corals become more colorful
corals erode
corals collect more zooxanthellae
corals become more susceptible to disease
Question 6
A) How do acidifying oceans affect coral reefs? (1 point)
increased number of marine creatures
increased reproduction
decreased carbon dioxide
decreased growth
Question 7
A) How do jumping worms affect tree populations in North America? (1 point)
They increase the population by eating competing plants.
They decrease the population by eating tree seedlings.
They decrease the population by preventing organic material from entering the soil.
They increase the population by adding nutrients to soil through leaf litter breakdown.
Question 8
A) Jumping worms affect populations in forest ecosystems by directly competing with native (1 point)
secondary consumers.
primary consumers.
decomposers.
producers.
Question 9
A) What causes algae blooms? (1 point)
burning fossil fuels
overfishing
nutrient pollution
deforestation
Question 10
A) Between 1970 and 2017, what caused the waterfowl population in North America to increase?
(1 point)
increased number of large farms
draining of wetlands
conservation efforts by hunters
increased pesticide use
Question 11
A) When analyzing changes to physical or biological components of an ecosystem, you might
state what you believe to be true about those changes. Which term is used to describe such
a statement? (1 point)
claim
observation
investigation
data
Question 12
A) In order to explain how changes to physical components of an ecosystem affect populations,
you must use data from observations and investigations. These data are also known as (1 point)
an argument.
reasons.
a statement.
evidence

Answer 1

Here are the answers to the questions you've provided:

Question 1 A) Competition would decrease. Wildfire would decrease the number of individuals competing for resources, making more resources available per individual.

Question 2 A) A disease kills individuals from the lion population.

Question 3 A) grassland

Question 4 A) 10

Question 5 A) corals become more susceptible to disease

Question 6 A) decreased growth

Question 7 A) They decrease the population by eating tree seedlings.

Question 8 A) decomposers.

Question 9 A) nutrient pollution

Question 10 A) conservation efforts by hunters

Question 11 A) claim

Question 12 A) evidence

Feel free to ask if you need further explanations or additional questions!