It would be B. the mixture became warm, as a change in temperature is certain evidence that a chemical reaction has taken place.
Answer:
Carbohydrates are sugars. Nucleic acids are the building blocks for DNA and RNA.
Explanation:
Answer: There are 206 bones in the human adult body, but 270 bones at birth.
Archaebacteria are obligate anaerobes, i.e., they flourish in the strict absence of oxygen., and that is why only they can undergo methanogenesis.
The cell membranes of the Archaebacteria are composed of lipids.
The rigid cell wall provides shape and support to the Archaebacteria.
Answer:
Because we cannot see some animals properly like jellyfish as their tissue is too soft, and feathers or for can often not make an imprint on fossils.
Explanation:
