Im pretty sure its petrolrumd
Answer: The correct answer is- bone structure of the baleen whale and the hummingbird share common ancestor.
Bone structure of the baleen whale and the hummingbird are the homologous organs.
Homologous organs can be described as the organs of different animals, which possess same basic structure but perform different functions.
For example- The flippers of a whale and forelimb of man, bone structure of the baleen whale and the hummingbird.
Baleen Whales and hummingbirds have a basic tetrapod skeletons, which is inherited from a common ancestor. But their bodies have been modified and they have lost parts through natural selection. This results in different adaptation in the form of their respective lifestyles over many years.
Answer:
Frequency of individuals with recessive trait(dd)
%
Explanation:
Please see the attached.
In the image it is clear that there are total 
mouse out of which 
are dark colored.
Since dark color allele is dominant, these dark colored mouse will have genotype either DD or Dd
The individuals with genotype "dd" will be of light color.
Number of light colored mouse 
Frequency of individuals with recessive trait(dd)
%
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
