What is a monomer of a carbohydrate

In the african savanna, more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

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?