Question

1. what do scientists do to receive suggestions and criticism of their research from other scientists?

enter science fairs
publish in journals
conduct peer reviews
speak at conferences

Explanation:

Peer - review is a process in which scientists' work is evaluated by other experts in the same field. When scientists publish in journals, the journal editors send their manuscripts to other scientists (peer - reviewers) for review. These peer - reviewers provide suggestions and criticisms. Speaking at conferences is more about presenting work rather than receiving detailed suggestions and criticism in a formal, structured way like peer - review. Entering science fairs is more of a student or amateur - level activity for showcasing projects. Conducting peer - reviews is what a scientist does to evaluate others' work, not to receive suggestions and criticism for their own.

Answer:

publish in journals