Almost all must lay eggs in the water.
1.birds
2.amphibians
3.both a and b
4.none of the above

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled