Answer:
I think it was Thomas Hunt Morgan
Answer:
carrying capacity (carrying capacity is the total population size that a particular environment can comfortably support with little increase or decrease over a relatively long period of time) given the food, habitat, water e.t.c. that is available in the environment.
Answer choice: [C]:
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V = d / t = 1800 mi / 40 min = 180 mi / 40 min = 45 mi / min .
Which very well could be "Answer choice: [C]: 45 m/min" ; except, this answer choice may have been written incorrectly—and should read:
"45 m/min."
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Now, notice that all the answer choices given are in "meters" per (unit time—seconds or mins.
So, we need to convert:
45 mi. to "meters", or "m".
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Note the following conversions:
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1 mi. = 1750 yd
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3 ft. = 1 yd.
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1 m = 3.2 ft.
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So, 1 mi. = ? m ;
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1 mi * ( 1760 yd/ mi) * (3 ft / 1 yd) * ( 1m / 3.2 ft) = _?_ m ?
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On the "left hand side" , the units of "mi", "yd", and "ft" ; cancel to "1" ;
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and we are left with:
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[(1760 * 3)] / [(3)*(3.2)] m = (5280 / 9.6) m = 550 m .
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So, we have: 550 m / min ; which match NONE of the answer choices.
However, it is possible that choices A or B, which are given in "m/sec" (meters per second); are among the correct choices.
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So, we convert: 550 m / min to: "m / sec " ;
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( 550 m/ min)*(1 min/ 60 sec) = (550/60) m/sec = (55/6) m/ sec
= 9 1/6 m / sec .
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which is: None of the above.
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Unless the answer choices were written incorrectly.
Answer:
Compound light microscope
Explanation:
This is the ideal microscope because it requires the passage of harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.
C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases these specimens can not be wet and living.
The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.
