NEED HELP- will make brainliest Choose the correct words to complete the sentences to explain the types of communities found in the tropical and temperate zones.

The tropical zone plays a major role in regulating weather. The tropical zone has an abundance of BLANK which is scarce in the temperate zone. However BLANK grows in the temperate zone and is absent from the tropical zone

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.