While working with heat in the laboratory, which of the following should you do?
a: leave a flame or operating hot plate unattended
b: reach across an open flame
c: heat a liquid in a closed container
d: point a heating container away from yourself

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

What is a dendrite and what does it do?