Answer:
Answered
Explanation:
Answer 13)option a) Asexually
Explanation-Bacteria or Eukaryotas reproduce Asexually.
Answer 14)they can only reproduce within a host cell and not independently.
Explanation- Viruses are parasites and they need a foreign cell to multiply itself.
Answer 15)The competition for finite resources.
Explanation- Darwinian evolution theory is based on mutation and the competition for finite resources.
Answer 16)option c- The biochemistry of life on Earth is Universal.
Explanation- The composition of cell, the basic unit of life is common for all living beings
Answer 17) option a)
Explanation- Carbon can form chemical bond with its atoms and atoms of other elements as well. Hence it is very stable in organic compound form..Thus it is a common element in the universe.
Answer 18). option a) Nucleotide
s
Explanation- The basic structure of DNA and RNA is formed of nucleotide, where the sugar is ribose.
Answer 19) Option c-Theory
Explanation- Darwin's Natural Selection is considered as ab accepted theory in Science.
Answer 20) option b)organic
Explanation- An organic compound comprises of the Carbon atoms in molecular bonds.
