Answer:
commensalism mutualism,parasitism
The independent variable is the plant growth or how much the plants grow.
Answer:
Ways in which people positively affect ecosystems around the world include: Recycling. Establishing wildlife preserves and parks. Creating green, open space laws.
Explanation:
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Answer:
Explanation:
Xylem transports and stores water and water-soluble nutrients in vascular plants.
Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.
Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.
Answer:
Angiosperms are the most advanced and beneficial group of plants. They can grow in various habitats as trees, herbs, shrubs, and bushes. The angiosperms originated about 250 million years ago and comprise 80% of the earth. They are a major source of food for humans and animals.
Explanation:
