If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
NGSS.MS:
MS‑ESS3‑3
,
MS‑ESS3‑4
,
MS‑ESS3.C.1
,
MS‑ESS3.C.2