How does gene therapy affect a cell? a. cells with defective genes are replaced with cells of normal genes. b. cells with normal genes are replaced with cells of defective genes. c. cells with abnormal genes are replaced with cells of destructive genes. d. cells with functioning genes are replaced with mutated genes.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

What is the difference between a meteoroid and a meteor?