PLEASE PLEASE HEL I WILL MARK BRAINLIES Identify two examples of chemical reactions that you have encountered during the last week. Identify whether each reaction is endothermic or exothermic and explain how you know.

Examples of chemical reactions in everyday life include photosynthesis, rust

Rust is exothermic

All combustion reactions (such as the burning of coal) are exothermic. Incredibly, the reaction between iron and moist air that produces rust is a very exothermic process and generates lots of heat.

Photosynthesis is endothermic

Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Explanation:

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if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.