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AveGali [126]
2 years ago
7

What does the atomic number of an element represent?

Biology
2 answers:
Ostrovityanka [42]2 years ago
7 0
-the number of protons found in an atom of that element
Reika [66]2 years ago
7 0

D. The number of protons in an atom of the element

(The atomic number of a chemical element is the number of protons found in the nucleus of an atom)

hope this helps

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To study osmosis, a student placed a thin potato slice in a salt solution. The slice became soft and shriveled. Then, he placed
mezya [45]
Osmosis is the movement of <em>water </em>from a region of higher water concentration to a region of lower water concentration across a selectively permeable membrane. Simply put, water passes across membranes into areas where more 'stuff' is dissolved.
In this system, The slice shriveled in salt solution. That means water left the potato's cells. Then the slice regained its shape when placed in pure water. That means water moved back into the cell. 
A) <em>incorrect</em>. Salt does not move across the membrane
B) <em>incorrect</em>. If water moved into the slice, it would have swelled, not shriveled
C) correct. Water moved out of the cell into the more concentrated salt solution
D)<em>incorrect</em>. Placing the slice in pure water does not balance the concentration of salt between the cells and the water.<em />
8 0
3 years ago
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Give an example of a this characteristic of life for an animal and for a plant.
valina [46]
An example for life for an animal and plant are that the both require foods to live. Animals hunt there own food but plants make there own due to photosynthesis. But they are similar because they both require food to continue living. There are many more characteristics but that is just one common one.

Hope this helped.

If this helped feel free to mark brainlist!
3 0
2 years ago
What ways does a frog differ from a tadpole
Dafna1 [17]
Tadpoles have gills allowing them to breathe underwater while frogs have lungs. Tadpoles have tails and fins to help them swim while frogs have arms and legs. 
8 0
2 years ago
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A
Elis [28]

Answer:

C.) Selective pressure

Explanation:

Selective pressure is a natural process that occurs in nature in which certain phenotypes are favored in certain environments. When we say these phenotypes are favored, this means individuals with these phenotypes have a better chance at survival and reproduction in particular environments. Certain phenotypes may be beneficial in some environments but harmful in others.

3 0
1 year ago
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Complete the sentences by matching the names of trees to the appropriate blanks.
raketka [301]

Answer: A: Pine, Cedar and Mango.

B: Pine and Cedar

C: Mango, Cedar and Elm

D: Pine and Cedar

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Deciduous trees are usually found at desert places that dont always have water, so they lose their leaves during etreme weather to reduce the rate of evaporation of water on its surface. Example, Maple.

Hardwood: These are flowering plants. they usually have broad leaves and nuts. example, Mahogany.

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5 0
3 years ago
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