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Aleks04 [339]
2 years ago
6

The age of the universe is measured in 10 to 20

Biology
1 answer:
melamori03 [73]2 years ago
6 0
4.6 or 4.7 billion years
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How much of Earth is comprised of ice? (1 point)
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<em><u>about 10 percent</u></em>

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Manuel is performing a scientific investigation to determine whether fertilizer A or fertilizer B is more effective at increasin
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All members of Kingdom Protista are ____________ , since their cell(s) possess a nucleus and membrane-bound organelles. Protista
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All members of Kingdom Protista are eukaryotes, since their cell(s) possess a nucleus and membrane-bound organelles. Protista species can be distinguished from Kingdom Fungi by the lack of chitin in their cell walls, and from Kingdom Plantae by their sexual reproductive structures.

<h3>What are protists?</h3>
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  • Protists are unicellular in nature but can also be found as a colony of cells.
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  • The primary feature of all protists is that they are eukaryotic organisms.
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  • Protista reproduces by asexual means. The sexual method of reproduction is extremely rare and occurs only during times of stress.

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5 0
1 year ago
Zebra mussel populations are growing explosively in the river systems of the central united states. the best explanation for thi
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The best explanation for this unchecked population growth is that the predators are too few to slow down population growth of mussels. The environment limits population growth by changing birth and death rates. The factors affecting population size and growth include biotic factors such as food, disease, competitors, and predators and abiotic factors such as rainfall, floods, and temperature. Predators affect individual growth rates of surviving prey by acting to increase growth rate by thinning the density of prey populations, which releases survivors from competition.<span />
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3 years ago
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