Answer: B- nitrogen
Answer choices are:
<span>A- water
B- nitrogen
C- carbon
D- phosphorus</span>
<span>The idea of helping someone to get some help in return resulting to close interactions is a symbiotic relationship. In a symbiotic relationship, the two species in the relationship like bacteria and legumes live together.</span>
<span>Legumes have root nodules that provide a home for bacteria (rhizobia). Rhizobia that fixes nitrogen. They convert nitrogen gas from the atmosphere into ammonia. This ammonia is in turn used in the formation of amino acids and nucleotides in legumes. This is the nitrogen <span>cycle which involves a symbiotic relationship between bacteria and </span></span>
Answer:
a. two plant species flowering at different times.
Explanation:
<em>The only option that is not a post-zygotic reproductive isolation mechanism would be option a, when two plant species flower at different times.</em>
Post-zygotic reproductive isolation mechanisms are those mechanisms that act to ensure that the product of fertilization remains invalid. This is as opposed to pre-zygotic isolation mechanisms that act to prevent fertilization and hence, formation of zygotes.
In option b, c, d and e; the zygote has been formed already and all the forces are just acting to ensure that it remains invalid. whereas in option a, there is no fertilization yet.
<u>Two plant species flowering at different times will ensure that there is no cross pollination between the two species. Without pollination, there cannot be a zygote formation.</u>
Hence, the correct option is a.
Genotype because it means, the genetic makeup of an organism determined by it's alleles.
Given what we know, we can confirm that sunlight is white light, when it shines on a red object the red wavelength is reflected. The other colors are absorbed, so the only thing you see is the red light reflected back.
<h3>What is white light?</h3>
We use "white light" as a term to describe the combination of all colors of light in the spectrum. The sun emits all colors of light, when this light hits an object, most of the colors are absorbed. The color that does not get absorbed is reflected back and causes us to perceive the object in that color.
Therefore, we can confirm that sunlight is white light, when it shines on a red object the red wavelength is reflected. The other colors are absorbed, so the only thing you see is the red light reflected back.
To learn more about white light visit:
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