Which statements about carbon dioxide are correct? Select all the correct answers.

1. Each oxygen atom gains four electrons to reach a noble gas configuration.
2. The carbon atom gains eight electrons to reach a noble gas configuration.
3. The carbon atom makes a total of four bonds.
4. Each oxygen atom makes two bonds.

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.