Why can't larger plants and trees begin to grow immediately after the lava cools to form new rock?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Describe characteristics of a good respitory surface

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above