Answer:
Angiosperms are plants with flowers, gymnosperms are plants that do not have flowers. Both groups belong to spermatophytes or seed plants.Gymnosperms are seed-producing plants that do not possess flowers. In gymnosperms, the flowers are replaced by cones, which lack ovaries.
Explanation:
Proteins for sure because lipids don't have enough antigen
Answer:
d. sewage treatment and nitrous oxide
Explanation: