1) Write the characters of 'Penguin' with the help of classification chart. Classification:- i) kingdom:
ii) Phylum:
iii) Class:
iv) Subkingdom:
Characters:-
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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.

How many types of rock can form from the rock cycle

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f