It is an example of a withdrawal reflex.
Everything we have today is because of the industrial revolution
Most of the infrared radiation to the Earth is absorbed and transmitted towards the Earth's surface.
B. requires flowers.
Sexual reproduction is one type of biological reproduction wherein the genitals of the male and female organisms engage into a sexual activity in order for the sperm cells to fertilize the egg cells of the females.
In the case of most plants, they engage in asexual reproduction. Asexual reproduction happens outside the body system of a cell.
Moreover, this process is extrinsic than its opposite the sexual reproduction which happens in the female reproductive system.
I would go with A, they inherited the wings even though they don't need them today, since evolution has changed the Ostrich in some way.
