(4) organic catalysts
The job of catalysts in chemical reactions is to make the reaction go faster by lowering the amount of energy needed to activate the reaction. If less energy is needed for the reaction to occur, then the reaction can go faster because a large energy build-up is not needed.
Answer:
1/2
Explanation:
Ggrr gives Gr, Gr, gr, gr
ggRR gives gR only.
So, the combination would be <u>GrRr</u>, <u>GrRr</u>, ggRr, ggRr
To have both dominant traits, the child has to GG or Gr, and RR or Rr
2/4=1/2
Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
The coral provides the algae with a protected safe environment (a home) and compounds they need for photosynthesis. The algae in return, produce oxygen and help the coral to remove wastes. Most importantly, zooxanthellae supply the coral with glucose, glycerol, and amino acids, which are the products of photosynthesis.