30x Magnification I think hope that helped
Answer:
pericardium
Explanation:
A double-walled membrane, the pericardium, separates the right and left chambers, preventing oxygen-rich blood from mixing up with the one without oxygen. So, the heart functions go smoothly. Deoxygenated blood enters the right atrium.
The recent events where scientific facts were changing our new discoveries on the moon and the new species of early humans have been discovered.
<h3>What are scientific facts?</h3>
Scientific facts are those facts that are based on scientific theories and experiments. These facts are true, and they came from organized and systematic knowledge.
Scientific facts were always changing s new discoveries happen. Scientist discovers new things every day.
Thus, the recent events are new discoveries on the moon, flying, and land in the martian area. A new species of early humans have been discovered.
To learn more about scientific facts, refer to the link:
brainly.com/question/23206660
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Skin pigments actually protect us from ultraviolet rays!
