What type of chemical reaction is this? 4 Al + 3 O2 --> 2 Al2O3
O decomposition
O single replacement
O synthesis
O double replacement
O combustion

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

Why do carbohydrate molecules function so well as fuel for the body?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind