Answer:
Producers are always at the beginning of a food chain. Producers begin every food chain because they can make their own food.
Answer:
c. macula densa
Explanation:
The cells of the macula densa are sensitive to the concentration of sodium chloride in the distal convoluted tubule. They are a part of the nephron.
<span>Bryophyte is a traditional name used to refer to all embryophytes that are non-vascular plants, namely the mosses, hornworts, and liverworts.</span>
The random movement of molecules across a concentration gradient until the difference in concentration between two regions is near zero.
Im thinking it's active transport :) hope it helps.
The six kingdoms are Archaebacteria, Eubcteria, Protista, Fungi, Plantae, Animalia.
