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Irina18 [472]
3 years ago
6

What happens the first day of fall?

Biology
1 answer:
Alja [10]3 years ago
3 0
<span>The sun crosses the celestial equator and makes the northern hemisphere colder</span>
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Explain how the unique properties of water are used by plants?
Veronika [31]
Less than 5% of the water taken up by roots remains in the plant, that water is vital for plant structure and function. The water is important for driving biochemical processes, but also it creates turgor so that the plant can stand without having actual bones.
4 0
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Agar is an important component of media because A. bacteria require agar to grow.
Alik [6]

C. Agar provides a solid surface for bacterial growth.

Agar is a substance obtained from red algae which when added to a culture media, provides a solid surface for the growth of bacteria. When the agar is not added then the culture media remains as the broth and when the agar is added then the broth gets solidified.

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3 0
3 years ago
11. Which of the following is an example of a pigment?
AleksandrR [38]
The answer is C, Chlorophyll
6 0
3 years ago
A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur
mote1985 [20]

<u>Answer:</u> The weight of the person above the surface of a planet is 635.83N.

<u>Explanation:</u>

To calculate the weight of a person, we use the formula:

w=mg     ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

g=\frac{GM}{r^2}

where, g = acceleration due to gravity = ?m/s^2

G = Universal gravitational constant = 6.67\times 10^{-11}Nm^2/kg^2

M = mass of the planet = 5.97\times 10^{24}kg

r = distance of the person from the planet = 6.38\times 10^6m

Putting values in above equation, we get:

g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2

Putting this value in equation 1, we get:

w=65kg\times 9.782m/s^2=635.83N

Hence, the weight of the person above the surface of a planet is 635.83N.

7 0
3 years ago
If a plant uses up all of the available carbon dioxide which if it will happen first
babymother [125]
If a plant uses up all of the carbon dioxide this would just keep makeing
oxygen or its known as photosynthesis. I'm NOT a 100% sure If this is
is the correct answer or not.
7 0
3 years ago
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