C. The number of covalent bonds is equal to the number of unpaired valence electrons. For example, nitrogen and phosphorous both have 3 unpaired valence electrons thus forming 3 covalent bonds.

7 0

3 years ago

What part of plant/algae contains nitrogen

Kruka [31]

Answer and Explanation: So the plant/algae take nitrogen from the topsoil by captivating through roots, such as the Glutaminic Acids, ammonium ions, or nitrate ions. Plants can't necessarily get nitrogen from instant air, however, plants obtain nitrogen through a natural process.

Hope this helps! :-)

7 0

3 years ago

Clara is a vegan and she does not drink milk, a food advertised as a best source of calcium. But she is not worried too much sin

marysya [2.9K]

Explanation:

%DV label= 27%

1 cup of cooked collared greens= aprx 266.60 mg of Calcium

Assuming Clara is...

a teen, her required adequate intake (RAI)= 1300 mg/ day
an adult, her RAI= 1000 mg/day

For teenaged Clara

∵27 % DV= 270mg

% daily Calcium= $\frac{270}{1300} * 100=$ = 20.8 ≈ 21%

=0.21

21% of her daily calcium needs is in a cup of cooked collard greens.

Calcium is an essential mineral required by the human body, it is involved in cell signalling, muscular function and homeostasis. Along with fats, fiber, vitamin A and C and iron, calcium makes up part of a recommended daily intake target or DV- these are integral to a balanced diet.

Learn more about energy storage at brainly.com/question/523624

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

3 0

3 years ago

Speciation or the formation of a new species can be the result of:

stich3 [128]

Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.

5 0

3 years ago