Which of these is a significant effect of vascular plants?

they were the first plants to colonize land.

they gave rise to mosses.

they maintain ecological balance by preventing desertification.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred