What is the comet's tail made of?

A. flames burning on the comet

B. light reflecting off of vaporizing ice and dust

C. clouds from Earth that the comet is passing through

D. rays of light shining from the comet

Specialized cells and organs are necessary in multicellular organisms becasue in these organisms

Match the descriptions to the processes. A) Ice cream starts dripping down the sides of an ice cream cone. B) Fog is created by using dry ice. C) Frost forms on trees on a very cold day. D) The mirror gets fogged up when you breathe on it.

Which hormone signals the kidneys to reabsorb water back into the bloodstream?

What is a downward arching rock layer?

Which organism is an autotroph? A) Bear B) Rabbit C) mushroom D) dandelion I think it's a dandelion, but not positive.

Which product can you NOT recycle? A. newspaper B. pressure-treated wood C. aluminum soda can D. plastic milk jug

What molecule is essential to regenerate at the end of the Krebs cycle to start the process again

Shamar lowers himself into a hot bath. At first, he can barely stand the scalding-hot water; gradually, though, he gets used to the temperature and is able to sit comfortably in the tub. Shamar's experience illustrates sensory:

Gregor mendel a. developed theories of evolutionary change. b. discovered the structure of the dna molecule. c. studied characteristics that are influenced by several genetic loci. d. discovered the fundamental principles of how traits are inherited.

A biologist is studying the process of how DNA is copied. Which of the following would he or she be studying? DNA transcription DNA elongation DNA translocation DNA polymerase DNA replication