Why is freshwater important, why is it at risk, and what actions can we take to protect it? Please try to write 3-4 paragraphs. Thank you.

Freshwater is essential for our planet. ... Freshwater environments include rivers, lakes, wetlands, streams and underground aquifers. They store and clean the water that's crucial for people and wildlife. Healthy freshwater environments supply water for drinking, growing crops, manufacturing, energy and transport. Rivers, wetlands, lakes, and the life that relies on them, are at risk around the world because of a variety of stresses, including overuse of water, pollution, introduction of exotic species, and overfishing, according to the new study, published today in the journal Nature.

Properly dispose of hazardous products

Put up signs

Use and dispose of harmful materials properly

Volunteer in your community

Join in a beach, stream or wetland cleanup

Prepare a presentation about your watershed for a school or civic organization

Organize a storm drain stenciling project.

Explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.