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3 years ago

14

How do sprouting plants exhibit positive gravitropism? A. The roots turn downward. B. The roots move horizontally. C. The leaves

face toward the Sun. D. The stems curl around supports.

2 answers:

Natasha_Volkova [10]3 years ago

8 0

Answer:

C

Explanation:

Pavel [41]3 years ago

4 0

Answer:

The answer is C. The roots face towards the Sun

They do this to get energy.

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The sage plant (salvia leucophylla) secrets a chemical that inhibits the growth of other sage plants nearby. considering this, w

vladimir1956 [14]

<span>Due to the fact that sage plants discrete a a chemical that inhibits other sage plants from growing nearby, it is most likely that sage plants would grow slightly far away from each other. Unlike some plants which will grow in thick areas all clumped together, the sage plant is going to grow in patches covering a larger area. This would most likely cause the sage plant to struggle growing in a pot if there was more than one plant.</span>

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3 years ago

I have two questions. please answer asap. this is living env.

Bingel [31]

<em>1.) </em>Based on the beliefs of some humans, cloning is not ethical. They fear that cloning can cause mental or physical damage to the organism that is cloned, they also believe it to be unethical because animals that are cloned are usually placed in poor living conditions before, during, or after the experimentation.

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3 years ago

What sugar-based structure is used for adhesion to tissue?

dem82 [27]

~Hello there!

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4 years ago

A sample of unknown concentration is diluted by placing 0.2 mL into 9.8 mL of buffer and then 3 mL is placed into a standard 1x1

Lina20 [59]

Answer:

The answer is " $4.875 \ \frac{mol}{l}\\$ ".

Explanation:

The molar absorptivity value is= 12.3 $\frac {L}{mol \times cm}$

path length of cell = 1 $\ cm$

Absorbance = 1.2

Using the beer's lambert law:

$A = \varepsilon \ cl\ \ \ \ \ \ \ _{where} \\\\c= \frac{A}{ \varepsilon l } \\\\$

$= \frac{1.2}{12.3 \times 1}\\\\= 0.0975 \ \frac{mol}{L}\\$

Claculating the concentration of the solution after dilution: $(m_2)= 0.0975 \ \ \frac{mol}{L}$

find out the dilution value before concentration :

The volume taken by the dilution: $(V_1) = 0.2\ ml$

The final volume after dilution:

$(V_2) = 9.8+0.2\\$

$= 10 \ ml$

Formula:

$\bold{M_1 \times V_1 = M_2 \times V_2} \\\\ M_1= \frac{M_2 \times V_2 }{V_1}\\\\$

$= \frac{ 0.0975 \times 10 }{0.2}\\\\= \frac{ 0.975 }{0.2}\\\\ = 4.875 \ \frac{mol}{l}\\$

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4 years ago

If sea lamprey increase in population and decrease the native fish population, the sea lamprey population will eventually collap

geniusboy [140]

Answer:

Negative feedback

Explanation:

Feedback mechanism is activated due to the change in the system that result into an output.

A negative feedback mechanism is a pathway that is caused by deviation in the output that result in a change in output direction which is usually opposite to the initial deviation.

The process of feeding of sea lamprey on the fish started as a normal pathway the deviation started when they could not feed on the fish again as a result of reduced population and they start dying of hunger. It is a negative feedback

3 0

3 years ago