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Trava [24]
3 years ago
11

Select the quantitative observations. Select all that apply.

Biology
2 answers:
drek231 [11]3 years ago
8 0

Answer:

the first and sencond options (1 and 2)

Explanation:

Hunter-Best [27]3 years ago
4 0

Answer:

The CORRECT answer is

Explanation:

The temperature of the water it 23’C.

And

The water has a pH reading of 7.2

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It helps them survive because since they eat mostly or all flies their long tounge can reach the flies from a long distance and that makes it easier to catch the flies
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When is it more appropriate to use presumptive tests in a crime investigation?
Debora [2.8K]
A presumptive Test presumes the pet presence of the question substance it is useful because it tells the drug is used false positive is possible meaning that the test result is positive but the substance is not present.
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Imagine what happens if materials are not send out of the body from time to time ?​
scZoUnD [109]

Explanation:

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3 years ago
High doses of caffeine interfere with the dna replication checkpoint mechanism in mammalian cells. why then do you suppose the s
Kipish [7]
Molarity = \frac{Solute(in Moles)}{Solution (in Liters)}

Moles of Caffeine = Mass of Caffeine/Molar Mass
Mass = 100 mg = 0.1 g
Molar Mass = 196 g/mole

Moles of Caffeine in one cup = 0.1/196 moles
= 5.102 * 10^-4 moles

If one cup of coffee is ingested (A typical adult contains about 40 liters of water),

Molarity of caffeine = [(5.1 * 10^-4)/ 40] M
= 0.012755 mM

The toxic molarity of caffeine in the body 10mM

How many cups will be toxic?
= Toxic Molarity/ Molarity of 1 cup
= 10/ 0.012755
= 784

In other words, you would have to drink 784 cups of coffee to reach the dose required to interfere with the DNA replication checkpoint mechanism.
8 0
4 years ago
Ging up each trophic level on the pyramid results in a 90% decrease in that energy transfer.
alex41 [277]

Answer:

True

Explanation:

Energy sees a 90% decrease as it moves up trophic levels because energy is lost as metabolic heat during the transfer of energy.

6 0
2 years ago
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