It means that the trait is heterozygous. Also, "T" is common used as the letter to represent the trait "Tall".
Distribute blood through the body
Sebum, a fatty substance that serves as a water repellent it also serves as a natural antibacterial and antifungal agent,
yes the skin is important not only to excrete but its also a protective organ that absorbs oxygen and nitrogen
<span>There is no primary root. Innumerable thin roots of similar size are present.</span>
C. How all organisms create energy
cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.