Affiliate Marketing Secrets

What factors interact to produce smog?
a. sunlight and pollutants from fossil fuels
b. particulates and pollutants from fossil fuels
c. sunlight and oxygen
d. sunlight and acid rain
Which of these practices has contributed to the depletion of fish populations worldwide?.
a. fishing bans
b. catching reproduction-age fish
c. rotating catches
d. harvest reduction
Question 4
A predator might control an introduced species by
a. keeping the population from increasing.
b. causing habitat fragmentation.
c. increasing available niches.
d. reducing biodiversity in the area.
Question 5
Which level of the food chain is most affected by biomagnification?
a. secondary consumers
b. producers
c. tertiary consumers
d. primary consumers
What would Earth be like without the greenhouse effect?
a. the same temperature as it is now
b. too cold to be habitable
c. a little cooler than it is now
d. a little warmer than it is now
Question 7
Cutting down an entire forest ecosystem is known as
a. selective cutting.
b. clear cutting.
c. harvest reduction.
d. sustainable development.
Question 8
Which of these would probably lead to a decrease in global warming?
a. an increase in the amount of water vapor in the atmosphere
b. a decrease in the amount of methane in the atmosphere
c. an increase in the amount of carbon dioxide in the atmosphere
d. a decrease in the amount of oxygen in the atmosphere
Question 9
What are renewable resources?
a. resources that formed over millions of years
b. resources that can replenish themselves over time
c. resources that exist only in rural areas
d. resources that are used faster than they form
Question 10
How many people can Earth support?
a. 20 billion
b. 50 billion
c. an unknown number
d. 10 billion
Question 11
Because the manatee is an umbrella species, protecting it may lead to
Choose one answer.
a. protection of many other species.
b. pollution of waterways.
c. decreased seagrass.
d. increased boating in their habitat.
Question 12
Which of the following is correct?
a. All ozone in the atmosphere is harmful.
b. Ozone in the stratosphere is helpful but ground-level ozone is harmful.
c. All ozone in the atmosphere is helpful.
d. Ozone in the stratosphere is harmful but ground-level ozone is helpful.
n what biome is biodiversity the highest?
a. temperate forests
b. deserts
c. grasslands
d. tropical rain forests
Question 14
Canned tuna made from small fish is generally considered to be safer to eat than canned tuna from large fish. Large fish have more pollutants
a. because they drink more water.
b. because they live in more polluted water.
c. due to their larger surface area.
d. due to biomagnification.
Question 15
How has the introduction of kudzu affected native species in the southeastern United States?
a. It has increased erosion, so native plants cannot grow.
b. It has covered native plants, depriving them of sunlight.
c. It has attracted animals that eat native plants.
d. It has helped native plants survive harsh weather.
Why are frogs sensitive to pollutants in water?
a. They are not an indicator species.
b. They have a small body mass.
c. They need low-oxygen conditions.
d. They have water-soluble skins.
Question 18
Which statement best describes Earths human carrying capacity?
a. increasing due to improved technology and medicine.
b. decreasing due to increasing population.
c. decreasing due to decreasing death rates.
d. a fixed number that we will soon exceed.
Question 19
Why are humans less sensitive than frogs to pollutants in water?
a. Humans do not have water-soluble skin.
b. Humans do not need water.
c. Humans are affected only by airborne pollutants.
d. Humans need low-oxygen conditions.
Question 20
What causes the level of carbon dioxide in Earths atmosphere to rise and fall over hundreds of thousands of years?
a. ice ages
b. the greenhouse effect
c. natural climate cycles
d. human activities

What factors interact to produce smog? a. sunlight and pollutants from fossil fuels b. particulates and pollutants from fossil fuels c. sunlight and oxygen d. sunlight and acid rain Which of these practices has contributed to the depletion of fish populations worldwide?. a. fishing bans b. catching reproduction-age fish c. rotating catches d. harvest reduction Question 4 A predator might control an introduced species by a. keeping the population from increasing. b. causing habitat fragmentation. c. increasing available niches. d. reducing biodiversity in the area. Question 5 Which level of the food chain is most affected by biomagnification? a. secondary consumers b. producers c. tertiary consumers d. primary consumers

im studying for my upcoming test and these are some sample questions my teacher posted, i need help with most of the questions and help for any of them is appreciated , i need to know the reason why they are either true/false too.
please help
Answer True or False
2a) The fundamental niche will always be larger than the realized niche in herbivores that are frequently attacked by predators.
2b) Rare individuals perform best under negative frequency dependent selection.
2c) Sex role reversals should be most common where sons are cheaper to produce and easier to rear
than daughters.
2d) Honest signals should be most often associated with high costs of production.
2e) Competitive exclusion is an extreme form of niche reduction. ____________________________________
2f) Sexual selection is a special form of natural selection that deals sexual reproduction i.e. selection to produce sexually to increase genetic variance.
2g) The higher the variance in quality among egglaying sites, the more pronounced the fighting characters in male salmon.
2h) In bamboo, plants that reproduce out of synch with the other members of the population will accrue high reproductive fitness.
2i) Ecosystems are defined by the unique biological communities that they harbor.
2j) Trait mediated effects can cause change in realized replacement rates.
2k) Replacement rate values of 1.0 are impossible to achieve when death rates exceed 0.5.
2l) Habitat fragmentation leads to decoupling of population dynamics among sub-populations.
2m) Inbreeding depression is most commonly observed in human females who suffer from morning