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What is the primary source of energy in this environment?
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
A lion cub resembles its parents because it inherits genes that produce
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
A farmer grows beans that he sells to local markets. Over a period of 40 years, the farmer has identifi ed the plants that produced the most beans and only used those beans to produce new plants. This procedure is part of the process of
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
Although we rely on coal, oil, and natural gas to produce energy, some environmental scientists have proposed that we use less fossil fuel. One reason to support this proposal is to
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
Which process must first take place in order for the proteins in foods to be used by body cells?
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
Which statement is characteristic of reproduction in humans?
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
Which row in the chart below represents the most likely changes in the atmosphere due to widespread deforestation?
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
Producers are generally found at the beginning of a food chain. Which statement best explains why this is true?
Producers do not rely on other organisms for food.
digestion
solar energy
The reproductive cycles of males and females are regulated by hormones.
help us to reduce the production of carbon dioxide gas
selective breeding
enzymes identical to some of the enzymes found in each parent
3
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