Answer:
The answer is B. carbon dioxide is harmful to the atmosphere, but plants absorb it as sustenance.
Answer:
4 is a
5 is b
Explanation:
a primary source is someone who was there at the time but a secondary source is someone who wasn't.
hope that helps!xx
Answer:
Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods—including meat from large animal
Stone tool marks on this zebra bone look like those made during butchery experiments. Scientists have made experimental stone tools and used them to butcher modern animals. There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million years ago.
Explanation:
Yes it is an indian holiday, so it is part of their culture, we learn about culture is social studies, dont we?