the heart has valves in place to prevent the backflow of blood.
This is true, Darwin spent over 20 years developing his theory of natural selection
The provided question is incomplete as the image is not given, however the correct image is attached.
Answer:
The correct answer is - embryo.
Explanation:
Angiosperms form embryos by the fertilization of pollen and ovule which are haploid structure and form diploid in the structure. It is also known as the seed embryo.
It is the structure that contain early life form of the plant which is root, leaves and stem.In this image pointer is showing the diploid or 2n structure which is embryo of the plant.
Thus, the correct answer is - embryo.
Answer:
NO!! you trying to kill off the human race or worse?
The volume of the thoracic cavity increases and the pressure decreases.
Hopefully this helped and good luck!!!