The movement of molecules from a high concentrated area to a lower concentrated area is called what

Which of the following is true?

jonny [76]

Answer:

d i believe

Explanation:

8 0

3 years ago

Read 2 more answers

3. The island of Rum in Scotland had wolves and trees 500 years ago. It now has neither. A. Offer one hypothesis for the current

pychu [463]

To test for the keystone species hypothesis, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.

<h3>What is a keystone species?</h3>

A keystone species is an organism whose existence defines an entire ecosystem such that them, the ecosystem would be severely affected or may not exist.

Trophic cascades are events which result in serious distortions in an ecosystem as a result of the removal or addition of a top predator.

To test for the hypothesis of keystone species and trophic cascades, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.

Learn more about keystone species at: brainly.com/question/2044051

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3 0

2 years ago

Carrot slices placed in a 0.2 M salt solution for several hours become flaccid (limp). Carrot slices placed in fresh water for s

SpyIntel [72]

<h2>Carrot in 0.2M salt solution</h2>

Explanation:

Carrot cuts put in 0.2M salt answer for a few hours gets flabby (limp).
Carrot cuts set in freshwater for a few hours gets <em>turgid (firm).</em> From this, we can conclude that such as.

Freshwater is hypertonic and the salt arrangement is hypotonic to the cells of the carrot cuts.
<em>Freshwater and salt arrangement are both hypotonic</em> to the cells of the carrot cuts.
Freshwater is isotonic and the salt arrangement is hypertonic to the cells of the carrot cuts.
<em>Freshwater is hypotonic</em> and the salt arrangement is hypertonic to the cells of the carrot cuts.
Freshwater and the salt arrangement are <em>both hypertonic to the cells of the carrot cuts.</em>

5 0

3 years ago

Calculate the cardiac output if heart rate (HR) is 90 beats per minute, stroke volume (SV) is 110 ml/beat, end diastolic volume

Yakvenalex [24]

ANSWER: None of the above options are correct.

Cardiac Output(CO) = Stroke Volume(SV) × Heart Rate(HR)

Therefore where HR= 90bpm and SV= 110ml/min,

CO = 90 × 110 = 9900ml/min or 9.9L/min.

EXPLANATION:

CARDIAC OUTPUT is the volume of blood being pumped by the heart into the systemic circulation per minute.

Cardiac output is the product of two variables, stroke volume and heart rate.

STROKE VOLUME is the amount of blood pumped out by the left ventricle in each contraction.

HEART RATE is the count of the number of times the heart beats per minute.

6 0

3 years ago

what describes the process facilitated with diffusion ? && what sentence describes exocytosis ? Biology help pls

Zepler [3.9K]

29. B

30. EXO means your EXporting it out of the cell so the answer would be C

7 0

3 years ago