Answer:
A
Explanation:
"A red dwarf, which is half as massive as the sun, can last 80 to 100 billion years, which is far longer than the universe's age of 13.8 billion years. (This long lifetime is one reason red dwarfs are considered to be good sources for planets hosting life, because they are stable for such a long time.)"
1). secondary; physical and thermal and radiological
2). primary; chemical radiological
3). secondary; physical and biological
Answer:
Carbon dioxide moves in; oxygen moves out
Explanation:
Water quality testing would be the best approach.
Four daughter cells that are haploid
1 2
4 not sure
yes no
yes yes
