C because think about it 50 black and then 50 white
A. Natural Selection. This is because the weeds that are not resistant to it die out before they can reproduce, but the resistant ones grow to maturity and then reproduce, passing down the resistance gene. Over time, the resistance gene would become a normal thing in weeds, while the non-resistant gene would not exist anyone, since the gene could not be passed on.
Yes, these are considered organs. The skin and the bones both fall under the definition of an organ.
Answer:
<h2><em><u>Option</u></em><em><u> </u></em><em><u>B</u></em></h2>
Explanation:
A RCB (red blood cell) present in human beings does not have a cell wall, only plants have cell wall.
<em><u>Here</u></em><em><u>,</u></em>
The RCB has,
Cell wall - absent
Nucleus - present
<em><u>Op</u></em><em><u>t</u></em><em><u>i</u></em><em><u>on</u></em><em><u> </u></em><em><u>B</u></em>