Answer:
Before meiosis actually begins, the DNA that is packaged into chromosomes must be fully copied.
"A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. ... Food webs consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems."
Answer:
From smallest to largest, the levels are species, genus, family, order, class, phylum, and kingdom. Each of the ranking levels is called a taxon. Just as a genus is a group of similar species, a family is a group of similar genera. An order is a group of similar families.
Answer:pre-formed structures and chemicals, and by infection-induced responses of the immune system.
Explanation: brainliest?