Which of the following is not a sedimentary structure?
A. Mud crack
B. Ripple mark
C. Batholith

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

(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?

The cluster of developing cells from conception until birth is called an