Which two characteristics are used to classify stars on the hertzsprung-russell diagram? a: size and density

b:density and composition

c: composition and temperature

d:
temperature and absolute brightness

What part of the plant has the most chloroplsts?

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%

What kinds of molecules can pass through the cell membrane without any problem?