Select all the correct answers. Which two generalizations can be made based on what you know about cycles of matter in a closed system?

New matter is added, and old matter is destroyed.

Matter changes it’s physical form, allowing it to return to its original state.

The amount of matter within the system remains the same.

Matter and energy can cross the boundaries of the system.

The cycle has a well-defined starting and stopping point.

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Which pedigree symbol is used to represent a female carrier of a recessive x-linked trait? поө0 || save and exit submit

Rotenone is an insecticide that is toxic

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.