In biology, the biotic factors pertain to the living components of Earth while the abiotic factors are those non-living chemicals and physical factors. The only choice that is not an interaction between biotic and abiotic factors is the third choice, "C. male elk fighting over a female".
The male chromosome b/c the males have the XY DNA in their sex cells
Ribosomes are the organelles of the cell which are involved in protein-synthesis (I. e. process of making proteins)
Answer: homo sapiens is the only species with a large enough oral cavity and a low enough larynx to allow for speech production.
<span>One line of evidence that speech only possible for modern homo sapiens is the anatomy of their throat. Speech depends on certain anatomical arrangements and the Homo sapiens is the only species with a large enough oral cavity and a low enough larynx that would allow speech.</span>
Hydrophilic heads, hyrdophobic tails. Heads are made of phosphate and the tails are made of lipids.
