People can conserve trees by recycling .

a paper
b aluminum

paper

Explanation:

paper is made from trees, and if you recycle them there can ve less trees cut down.

paper is the ans bcz paper are made by tree pulp and aluminium is a metal hope it may help u

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.

answer; a database is an organized collection of data in digital format that users to keep track of information;