Without sunlight plants can undergo photsynthesis and cannot produce oxygen for humans to breathe and would cause the humankind to go extinct.
Question 2
D) Carbohydrates
Answer:
phenotype is Rr, or rr genotype is RR, or Rr.
Explanation:
because we combine two types of letters so we may find out what compartment of the Punnet square represents.
ANSWER:
Index Fossils can be used to identify a specific period of time
C. smog
is the correct choice plug