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USPshnik [31]
3 years ago
5

Which statement is true about dichotomous keys?(1 point)

Biology
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

Dichotomous keys can only be used to classify organisms based on their observable traits.

Explanation:

I got it wrong on connexus so i hope you dont make the same mistake i did ;-;

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What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source
raketka [301]

Answer:

Plants developed roots to absorb water from the ground

5 0
3 years ago
Does high tide happen at full moon?
ki77a [65]

Answer:

Yes, high and low tide are affected by the moon.

4 0
3 years ago
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Calculate the volume of 1 M NaOH needed to prepare 12.0 mL of a 0.10-M solution. Prepare this solution. (Refer to the Dilutions
Lapatulllka [165]

Answer:

1.2 mL

Explanation:

<em>This is a problem of simple dilution. The dilution principle simply agrees that the number of moles before dilution must be equal to the number of moles after dilution.</em>

Recall that: number of moles = mass/molar mass or molarity x volume.

Hence, for the dilution principle:

              initial molarity x initial volume = final molarity x final volume.

In this case, initial molarity of NaOH = 1 M, initial volume = ?, final molarity = 0.1 M, final volume = 12.0 mL.

Initial volume = final molarity x final volume/initial molarity

                       = 0.1 x 12/1 = 1.2 mL

It thus means that 1.2 mL of 1 M NaOH would be taken and then diluted up to 12.0 mL mark by the addition of distilled water in order to produce 12.0 mL, 0.10 M NaOH solution.

8 0
3 years ago
Elias conducted an experiment about the effects of exercise on the heart rate of teenagers. Before morning basketball practice,
padilas [110]

The <u><em>correct answer</em></u> is:

He needs to select a more representative sample.

Explanation:

Choosing students from the basketball team for the sample he uses on a study of heart rates and exercise will be a biased sample.  This is because students on the basketball team are potentially healthier than other students, which means that exercise will not have a large an effect on their heart rate as it would if they were not as healthy and not as physically fit.

In order to reduce the amount of bias, he should choose students from different groups throughout the school.

8 0
3 years ago
Read 2 more answers
Can Someone Please answer this, I need help.
Serga [27]

Answer:

i would just say the average amount of time it takes is about 5 mins and 30 secs. well it depends on the temperature of the water as well. if the water is cold it will boil faster (and its weird but true.). but yea maybe the time it took 7:05 it was luke warm water. i hope this helps.

Explanation:

i explained it? eh.

7 0
3 years ago
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