Answer:
They affect chemical reactions by lowering the activation energy, thus speeding up the reactions.
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Answer:
Explanation:
Disadvantages of internal fertilization are that there are lesser number of offspring produced at a given time because it is sometimes difficult for the male and female to come into intimate contact. Additionally, the risk of sexually transmitted diseases also increases.
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Acidic solutions have pH of less than 7. Neutral have pH of 7. Basic solutions have pH higher than 7.