Part III. Direction: Match the organisms in Column A to the symbiotic relationships that they might have in an ecosystem in Column B.
Column A
Column B
1. Bees and flower
A. commensalism
2. Orchids attached on a big tree
B. competition
3. Tapeworm in human intestine
C. mutualism
4. Grasses in the backyard
D. parasitism
5. Larva of an insect lives on the leaves of a plant​

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.

How do specific cell structures and organelles contribute to maintaining homeostasis in the cell?

Which term is applied to a scientist who studies ancient life, including animal and plant fossils? a- paleontologist b- geophysicist c- dendroclimatologist d - anthropologist