(Q).
Q: Why do hummingbirds have long narrow bills? Read this paragraph and choose the correct option from the provided answers: dome-shaped plug of thick lava that cools near the vent of a volcano. Choices: - to feed their offspring - to store food - for protection against predators - to reach the nectar at the bottom of flowers A:
(A).
to reach the nectar at the bottom of flowers

(Q).
Q: Which two gases make up the bulk of earth's atmosphere? Read this paragraph and choose the correct option from the provided answers: A: Air in the atmosphere is a gaseous solution. It is a mixture that contains mainly nitrogen and oxygen gases, with very small amounts of several other gases. The circle graph in the Figure below shows the composition of air. Because air is a solution, it is homogeneous. In other words, no matter where you go, the air always contains the same proportion of gases that are shown in the graph. Choices: - carbon and oxygen - phosphorus and oxygen - nitrogen and argon - nitrogen and oxygen A:
(A).
nitrogen and oxygen

(Q).
Q: What type of cell has a singular chromosome, no nucleus, and few other organelles? Read this paragraph and choose the correct option from the provided answers: Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus and many other organelles. All of these cell parts must be duplicated and then separated when the cell divides. Choices: - trophic - graphic - monophyletic - prokaryotic A:
(A).
prokaryotic