The 2 main classes of angiosperms are?

A. xylem and phloem

B. monocots and dicots

C. raceme and umbel

D. pistil and stamen

Which species concept would be most useful to a team of biologists conducting a survey of bird diversity in forest plots?

Will give Brainliest answer Both primary and secondary succession begin with pioneer species that? A. change the area and make it safer from predatory organisms B. invade the area so that new organisms cannot be established. C.

What is a function of the efferent division of the nervous system?

What are the chances of rolling on 4 sided dice?

What are the different functions of homeostasis and metabolism in living organisms?

How can you tell that a sperm cell is animal cell and not a plant cell?

The all-or-nothing principle means that a. All the nerve impulses go to the brain b. An entire neuron depolarizes to its maximum strength c. All the potassium ions on one side of the cell membrane move to the other side of the cell membrane d.

Saki went on vacation and was fortunate enough to get to see the aurora australis. What solar activity did she observe?

The first embryonic stem cell trials too place October 2010 to treat a patient. This patient had been left partially paralysed by nerve damage after a spinal injury. Explain why it is an advantage to use embryonic stem cells to treat spinal injuries.

Which of the following organs is part of the respiratory system? lungs heart skin stomach