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John Ruiz
Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources. These are all ways that.

a. humans have intervened to both manage and manipulate the environment to ensure species survival

b. nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem

c. cities have been form to keep wildlife in public
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Guest
How are the graphs of a body chemical controlled by negative feedback and a chemical controlled by positive feedback similar
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Kinsley Gould
When molecules have an uneven distribution of charges they are said to be
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Watson
Concerning the presence of the nucleus what is the difference between animal and bacterial cells?
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Emilie Burgess
Meiosis is to mitosis as ...

A. evolution is to adaptation B. somatic is to body

C. regeneration is to replacement D. different is to same
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Sanaa Larson
Do red idaho potatoes ever mature?
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Mattie Mendez
How can you describe the environment in which an organism lives?
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Kierra Mason
Which quanity is the transfer of energy? a) motion b) force c) work
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Octavio
On average, about how quickly does our immune destroy viruses? About how quickly does a vaccine destroy viruses? How many virions (virus particles) do they destroy in a specific time span?
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Quinn Avila
What is the function of the reactions in the citric acid cycle?
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Nathalia Fisher
Phenylketonuria, or PKU, is a recessive genetic disorder in which the amino acid phenylalanine cannot be properly metabolized. Children with PKU develop mental disabilities. However, the condition can be prevented with a special diet if the disease is caught very early. Which of these is a societal decision that could be made based on scientific knowledge about PKU? A. Some parents choose to serve meals that meet a PKU diet even if no one in the family has PKU. B. Hospitals are required to screen all newborn babies for PKU. C. Newborn babies who are heterozygous for PKU should be treated for the disorder. D. Both parents must carry the gene to pass on the PKU disorder.
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Cash Joseph
Describe briefly the structure and function of spinal cord?
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Reynolds
What would happen to the possible variation in gametes if the number of chromosome pairs increased from two to three? What if the number increased again from three to four?
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Jayden Ramsey
Which evidence best supports the theory that the

continents have moved over time?
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Izaiah Chang
Which animal would have the greatest chance of survival?

-one that had a single food source

-one that fed through a food chain

-one that is prey for many animals

-one that fed through a food web
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