A species of bird developed a new beak shape that helped the birds eat different types of food. Which sentence most likely explains why the bird
species changed over time?
A. The new beak shape improved the likelihood that the birds would
survive and reproduce.
B. The new beak shape caused air drag and slowed down the birds
during flight.
C. The new beak shape prevented the birds from defending
themselves from predators.
D. The new beak shape increased the amount of food the birds
needed to eat to survive.

What are the headings of a data table

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.