6. All of the following are factors that affect ecosystems EXCEPT O toxins.
O
temperature.
O genetic variation
O nutrients.
.

Which system revise and send electrical signals throughout the body

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex