Which of the following is true about ecology? (1 point) Ecology is a philosophy that seeks to limit harm to the natural world.
Ecology is a practice that emphasizes preservation of life.
Ecology is an area of study that focuses on interactions in nature.
Ecology is a strategy for sustainable living.

c

Explanation:

Ecology is an area of study that focuses on interactions in nature.

allowed for the prediction of the properties of missing elements.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds