Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope.
Answer:
article 2
Explanation:
Article Two of the United States Constitution establishes the executive branch of the federal government, which carries out and enforces federal laws.
Answer:
The energy comes from electrons produced by oxidation of biological molecules.
Explanation: In photosynthesis, the energy comes from the light of the sun.
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Answer:
When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources.
Explanation:
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