Olivia learns that all living things, including human beings, need to have a high level of fitness to evolve and adapt. There are two main differences between an organism with low fitness and one with high fitness. The first is the ability to survive. What is the second ability?
A. mutation
B. reproduction
C. coevolution
D. gene transfer

B. reproduction

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Gabriel goes camping and sees several snakes along the hiking trail. Most of the snakes are brown, but he notices a white snake. The snake's color could be a result of a genetic mutation. Which prediction could Gabriel make based on his observations?
A. radiation
B. gene flow
C. chemicals
D. gene drift

Melissa reads about the Burmese pythons that are destroying the native wildlife in the Florida Everglades. The baby pythons are brought into the United States and sold as pets. Some owners release them into the Florida wetlands when they do not want the snakes as pets any more. The pythons breed, and since they have no natural enemies, they have multiplied uncontrollably. Some of the native wildlife are near extinction because the pythons have preyed on them. People introducing non-native predators is one cause of extinction.

What are other causes of extinction? CHOOSE THREE THAT APPLY.
A. climate change
B. competition
C. mutation
D. disease
lizard bird octopus grasshopper whale human Homologous structures
No Homologous structures

Liam observes a gray wolf and a brown wolf at the zoo. This difference in color is an example of _____________ within a species.

You are given three samples of the same shampoo at three different temperatures 35°C, 50°C and 75°C

Which sample has the highest viscosity?

Which sample has the highest flow rate?
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Which sample has the highest density?