In summer they're cooler and during winter they're warmer
Answer:
Prehistoric
Explanation:
The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.
Answer:
answer in explanation
Explanation:
found in a coiled loop floating in the cytoplasm in a region called the nucleoid
Most reasonable answer is the swallowable camera one. mris and cat scans were invented in the 70s and the rest of the answers are around the 1800s or before.
Biology is the study of living thing