Answer: My answer is the esophagus
Explanation: The esophagus is basically a fibromuscular tube that helps food get from the pharynx all the way into the stomach. I hope this could help a bit!
The answer is B
An open system has its energy and matter leave and enter the system's boundaries unlike in a closed system where energy remains within the system.
The earth's atmosphere shares heat and water vapor with the hydrosphere (oceans, seas and lakes), energy form the sun, in the atmosphere and then partly radiated back to space
Answer: Stem cell research has the potential to treat diseases that are currently burdened with high health care costs—especially chronic conditions such as heart disease, Alzheimer's disease or diabetes, the costs of which threaten to cripple the healthcare system.
Answer:
The Kyoto Protocol, a landmark environmental treaty that was adopted in 1997 at the COP 3 in Japan, represents the first time nations agreed to legally mandated, country-specific emissions reduction targets.
Explanation:
https://en.m.wikipedia.org/wiki/Kyoto_Protocol
the article where I got the info from, hope this helps
