The answer to the question above is letter "B. metabolism". General meaning of the word is that it is a chemical process that occur within the living organism in order to maintain life. The metabolism of the body is divided into two categories, anabolism and catabolism.
Answer:
cells have many structures in them which can also be called organelles
Explanation:
these organelles are like the organs of humans
each organelles have their own function
they help the cell to stay alive
The answer is 'Cambrian' explosion. This took place approximately 541 million years ago. 'Explosion' refers to the evolution of a large range of new major animal phyla. Scientists know this by the large number of diverse fossils from this period. Prior to this period, organisms were single-celled, but over the Cambrian Explosion, lasting about 80 million years, life forms diversified rapidly to resemble the life forms existing today.
