They all have pollen in the center which makes them duplicate and make more of their species of flower
Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
The various forms of a single gene that code for brown, blonde, or red hair are called genotype. For example, Bb and Dd.
Answer:
Blue light
Adding 10-20% blue light allowed plants to grow much healthier, with a compact appearance. There is also far-red light which is has wavelengths that are lower than normal red light–similar to near-infrared wavelengths. Far-red light helps the plants produce greater yields.
