B- Enzymes act as catalysts to speed up chemical reactions
Answer:
Nervous system
Explanation:
The nervous system consists of the the brain and the nerves and the damage was done to the nerves that run all the way down his leg.
Answer:
1. Leads to mixing of genetic materials hence variation within species
2. Leads to offspring with hybrid viguor that tend to show high and adaptability to environmental conditions.
3. Variations due to sexual reproduction leads to improvement of species hence evolutionary changes that may bring about specialisation
