Aphids are tiny insects that feed on plants. Ladybugs are helpful to plants because they eat aphids. Which type of organism are aphids in this scenario?

decomposers
predators
prey
producers

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water