Both ancestral birds and ancestral mammals shared a common ancestor that was terrestrial. Today, penguins (which are birds) and seals (which are mammals) have forelimbs adapted for swimming. What term best describes the relationship of the bones in the forelimbs of penguins and seals, and what term best describes the flippers of penguins and seals?1. analogous, analogous2. analogous , homologous3. homologous , homologous4. homologous , analogous

The term that best describes the relationship of the bones  and flippers are : ( 2 )

Analogous structures are structures found on different organisms which are similar to one another in function. The analogous structure found in both Penguins and seals in the question is "The bones".

Homologous structures are similar structures found on related organisms and the homologous structure in the question is the presence of flippers in both the Penguins and seals.

Hence we can conclude that The term that best describes the relationship of the bones and flippers are Analogous and homologous

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2

Explanation:

The bones in the forelimbs of penguins and seals are best described as analogous, while the flippers of penguins and seals are homologous.

Analogous structures are structures that are similar in different organisms, even though they are unrelated to each other. For instance, the wings of birds and the fins of a penguin or a fish.

Homologous structures are similar structures in related organisms. Both the penguins and the seals have flippers. Another example is the human arm and the wings of a bat. Both have similar structures internally, but while a human lifts items with their hands, the birds use theirs for flying.

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.