How does a vascular plants xylem differ from its phloem? a. the material that flows in the xylem is only water. b. only xylem transports carbohydrates. c. the materials in xylem flow in only one direction. d. only xylem is found in roots.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination