Two unlabeled slides are viewed under a microscope. Slide a has cells with a visible nucleus, mitochondria, a cell membrane, a cell wall, and chloroplasts. Slide b has cells with a visible nucleus, mitochondria, and a cell membrane. How should these slides be labeled?.

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.