Which of the following indicates a catalyst is used to alter a chemical equation? (3 points)
A.
chemical formula written over an →
B.
↓↑
C.
Δ written under an →
D.
chemical formula written under an →

a. they are both space stations

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pls mark as brainliest.

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

a polar bond is formed when electrons are shared unevenly between atoms