Signals from the ___ system cause contractions in skeletal muscles. A. Respiratory B. Endocrine. C. Nervous. D. Digestive

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Ascientist is examinin the cell is disrupted when she damages one specific type of macromolecule g the function of macromolecules in a cell she notices that movenent of large molecules into and out of

What type of plant is good for a bioassay and where can i buy it? i only have a month.