Answer:
Playtime in learning centers improve social and learning skills for the kids.
Explanation:
Kids that are in preschool are in their most important learning phase and growing. Studies have shown that playtime in learning centers are moreeffective for them than fromal lessons in literacy and math skills because they help kids to develop their social and learning skills.
Answer:
B, they need as much as they can get.
1 is false, waves can't propagate in a vacuum.
Answer:
<em>All galaxies contain groups of stars and other material held together by gravity.</em>
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