Chemistry
Chemistry, 07.11.2019 18:31, deena7

Me and plz answered this all right plz

sarah and john are having...

Me and plz answered this all right plz

sarah and john are having a discussion on genetic diversity. sarah believes that it happens over a long period of time. john believes it happens immediately. who is correct? question 1 options:
sarah is correct because genetic diversity occurs over a long period of time. john is correct because genetic diversity occurs immediately. both are correct because genetic variation can occur immediately or over long periods of time. neither are correct because genetic diversity occurs over any period of time.

if the environment changes, what is the first thing a species will do to survive?

question 2 options:

the species will suddenly move from the area

the species will adapt to the changes

the species will change the environment back

the species cannot survive a change in the environment

which of the following is not a behavioral adaptation?

question 3 options:

a squirrel buries acorns to dig up and eat later.

a honeybee does a dance to tell the other bees where to find flowers.

grass stops growing during a drought and begins growing again when it rains.

the spines of a cactus protect it from animals.

marie places her house plant near a window. the sun shines in the window, but her plant is slightly out of reach for the sun. what will marie's plant do to survive?

question 4 options:

marie's plant will shrink so that it does not need as much sunlight to survive.

marie's plant will lean toward the sun so that it can get the most sunlight.

marie's plant will eventually die from not having enough sunlight.

marie's plant will grow tall and healthy because it does not need sunlight to survive.

the dodo bird has been extinct for many years. many believe that the dodo was not afraid of the dutch sailors who ate it. the sailors realized that the bird was incredibly easy to catch because of this. what was the reason for the dodo birds' extinction?

question 5 options:

the dodo bird adapted and overcame the challenges of the environment.

the dodo bird could not adapt quickly to the challenges of the environment.

the dodo bird behaviorally adapted to the change in their environment.

the dodo bird could not adapt quickly to the challenges of the environment so they moved to another area.

average temperatures have been rising quickly in the polar ecosystem. how would these temperature changes affect sea levels in this ecosystem?

question 6 options:

sea levels would rise.

sea levels would fall.

sea levels would fluctuate.

sea levels would stay the same.

what would happen if the krill were removed from the food web below?

the population of seals would increase.

the population of squid would decrease.

the population of seals would stay the same.

the population of squid would fluctuate.

what would happen if prey were added to the food web?

the population of foxes would increase.

the population of owls would decrease.

the population of foxes would stay the same.

the population of owls would fluctuate.

this graph shows how the lynx and snowshoe hare populations can vary over time. how would the snowshoe hare population change if hunters killed most of the lynxes?

it would increase.

it would decrease.

it would stay the same.

the snowshoe hare would become extinct.

changes in an environment can destroy entire ecosystems. these changes can occur quickly or over time. which environmental change occurs fastest?

question 10 options:

volcanic eruption

regrowth of forest after volcanic eruption

pond succession

decomposition of a tree

over time, the trees in africa have gotten taller. many species have had to adapt to this change in order to survive. which of the following is a structural adaptation that has the african giraffe meet this change?
question 11 options:

the african giraffe has become a faster at running from its predators.

the african giraffe's neck has increased in size over the years.

the african giraffe have moved to another part of africa.

the african giraffe has not adapted and struggles to survive.

eve and sammy are discussing the affects of farming on the environment. eve states that farming does not harm our environment. she believes that it is only beneficial for the ecosystem and species living in it. sammy states that farming can have major impacts on the environment. he believes farming can cause habitat loss. who is correct?

question 12 options:

eve is correct because farming only leads to positive affects on ecosystems.

sammy is correct because farming has major affects on the environment including soil erosion and flooding.

eve is correct because farming does not lead to soil erosion and flooding.

neither of them are correct.
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