What is the words that this is? absorbs heat from the sun to cause the greenhouse effect (2 words)

Which part of cellular respiration must occur before any of the other steps can occur

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells