So sánh sự khác nhau về quá trình tiêu hoá thức ăn ở động vật chưa có cơ quan tiêu hoá , động vật có túi tiêu hoá , động vật có ống tiêu hoá

What do animals wth echolocation have in common other than echolocation

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.