BSC 101 Exam 2 2026/2027 || Questions with Correct
Answers|| GRADE A+|| 100% PASS!!!
predation - ANSWER-when an organism eats another for energy and nutrients (can
avoid this by camoflauge, bright colors that make them seem poisonous, mimicking
something harmful, or actually being poisonous)
competition - ANSWER-when living in the same environment, two species cannot
coexist in a community if they're competing for all of the same resources
commensalism - ANSWER-when one species benefits from the relationship but the
other is unaffected (bird nesting in a tree)
parasitism - ANSWER-living in another organism and living off of their nutrients
energy is lost at each trophic level (lowest at the Tertiary consumers) - ANSWER-
energy flow in an ecosystem?
an example would be yellowstone national park's wolves: number of deer was large but
when the wolves arrived, the deer behavior was altered and they avoided areas where
they could be trapped. other organisms began to show up in new habitats. - ANSWER-
discuss keystone species
energy being lost at each trophic level - ANSWER-What limits the length of food
chains?
the population steadily stayed the same until about 2000 when it shot up to an
extremely high number - ANSWER-Explain human population growth
- insufficient resources
- unequal distribution of resources
- starvation
- rapid spread of disease
- less effective sanitation
- declining of life expectancy - ANSWER-Consequences of human population growth
-reduce your ecological/carbon footprint
- beware of perceived obsolescence
- use birth control and plan your family
- freely available birth control
- education for everyone, especially girls - ANSWER-Potential solutions to human
population growth
evaporation - ANSWER-moving water into atmosphere (water vapor)
Answers|| GRADE A+|| 100% PASS!!!
predation - ANSWER-when an organism eats another for energy and nutrients (can
avoid this by camoflauge, bright colors that make them seem poisonous, mimicking
something harmful, or actually being poisonous)
competition - ANSWER-when living in the same environment, two species cannot
coexist in a community if they're competing for all of the same resources
commensalism - ANSWER-when one species benefits from the relationship but the
other is unaffected (bird nesting in a tree)
parasitism - ANSWER-living in another organism and living off of their nutrients
energy is lost at each trophic level (lowest at the Tertiary consumers) - ANSWER-
energy flow in an ecosystem?
an example would be yellowstone national park's wolves: number of deer was large but
when the wolves arrived, the deer behavior was altered and they avoided areas where
they could be trapped. other organisms began to show up in new habitats. - ANSWER-
discuss keystone species
energy being lost at each trophic level - ANSWER-What limits the length of food
chains?
the population steadily stayed the same until about 2000 when it shot up to an
extremely high number - ANSWER-Explain human population growth
- insufficient resources
- unequal distribution of resources
- starvation
- rapid spread of disease
- less effective sanitation
- declining of life expectancy - ANSWER-Consequences of human population growth
-reduce your ecological/carbon footprint
- beware of perceived obsolescence
- use birth control and plan your family
- freely available birth control
- education for everyone, especially girls - ANSWER-Potential solutions to human
population growth
evaporation - ANSWER-moving water into atmosphere (water vapor)
