What is true of a match burned in a closed
system?

A. The total mass of the system will be the same because the atmos were only rearranged.
B. The total mass of the system will be less because the flame consumed some of the mass.
C. The chemical reaction will destroy some of the mass.
D. The mass of the ashes will be greater than the mass of the match.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?