John is observing a few slides of a human embryo. the first slide shows a neural tube and the second just a compact mass of cells. which phases of human embryos are the slides?
a. first slide: blastula; second slide: gastrula
b. first slide: gastrula: second slide: neurula
c. first slide: neurula: second slide: morula

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box