Six hundred plants were divided into 6 groups of 100. Each group was placed in a different color light for 600 hours. Group 1 = red, group 2 = green, group 3 = white. Every 60 hours scientists counted the leaves. List the constants in the experiment.

Define evolution.

What are the two goals of evolution?

What is natural selection?

What is a homolgous structure?

What is an analogous structure?

How do we determine that organisms are related?

What is the name of the benefical bacteria that lives in our gut?

What organelles do plants contain that animals do not?

Which part of the leaf is involved in gas exchange?

Which organisms perform photosynthesis?

Which organisms perform cellular respiration?

What are the products of photosynthesis?

What is the difference between a gymnosperm and an angiosperm?

Xylem transports....

What body system fights off viruses?

What is animal sugar?

What is plant sugar?

Biotic factors are...

What is the main source of energy for all living things?

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