All infectious diseases Group of answer choices only occur in humans. involve viruses as the pathogen. are contagious. are caused by vectors. are caused by microorganisms or their products.

Below are the three main organs that make up the plant body. what is the main function of the structure that is identified as b in the picture above? it anchors the plant. it produces food. it absorbs nutrients. it supports the plan

Which nucleotide component contains nitrogen

The function of the excretory system is to control homeostasis and