What were the three major invasions of living creatures on land?
What will be an ideal response?
Plants journeyed onto the land first, about 500 million years ago. Arthropods were next, and amphibians, the first land vertebrates, moved onto land during the Devonian period.
You might also like to view...
An unpressurized autoclave would not be able to sterilize a growth medium with contaminating bacteria but could still pasteurize it
Indicate whether the statement is true or false.
A high level of FSH increases the likelihood of
a. identical twins. b. fraternal twins. c. conjoined twins. d. a single birth. e. infertility.
The photosynthetic bacteria that form the basis of the food chain in the Great Salt Lake are classified as
A) carnivores. B) herbivores. C) secondary consumers. D) omnivores. E) producers.
Narrow, parallel-veined leaves are characteristic of:
A) both monocots and dicots. B) many dicots. C) non-flowering seed plants. D) monocots.