Question Question 7 (1 point)
The diagram below shows how a chemical message produced by one cell is recieved by another.
Secreting cell
Receptor
Chemical
message
Target
cells
What process is the secreting cell using to release the chemical message?
а
b
diffusion
exocytosis
osmosis
endocytosis

(05.01 mc) west indian manatees are large aquatic mammals that live in rivers and near shore estuaries, especially in florida. they have two flexible front flippers with three or four toenails, similar to elephant toenails. though they lack hind limbs, manatees have vestigial pelvic bones, as shown in the diagram. manatee and elephant skeletons are shown side-by-side. the manatee, an aquatic animal, has a skeleton that has two large front limbs and two very tiny hind limb bones that do not form actual limbs. the elephant has four large limbs. which of the following answer choices best describes how evidence of the manatee toenails and pelvic bones supports the scientific theory of evolution of these animals? (1 point)