Answer:
In Music, Backbeat is loud, has a steady rhythm accenting beats 2 and 4 in 4/4 meter. It's a syncopated accentuation on the off beat.
Explanation: I hope this help.
Answer:
Prehistory is the period that begins with the appearance of the human being, about five million years ago, and finishes with the invention of writing, about 6,000 years ago.
The thing is it is different everywhere
Search prehistory wikipedia they have lots of good info
Seed plants reproduce using Pollen which develops into sperm cells