The answer is D. digestive, circulatory, endocrine, and nervous
Answer:
In the years since human beings first reached the summit of Mount Everest in 1953, climbing the world’s highest mountain has changed dramatically. Today, hundreds of mountaineers manage the feat each year thanks to improvements in knowledge, technology, and the significant infrastructure provided by commercially guided expeditions that provide a veritable highway up the mountain for those willing to accept both the risks and a hefty price tag.
Explanation:
The answer is B because you must not plagiarize. you can do that by citing the original author.
Answer:
Observations help scientist come up with new ideas because collecting and storing data helps them make predictions on their theories. They need logical hypothesis so they have a better idea of the outcome when they conduct an experiment.
Explanation:
Better to be safe than sorry! An accurate observation is a must so nobody gets harmed or things get out of hand!
