In your own words, explain how adaptive traits speed?

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.

Modern hospitals often contain semi private rooms and wards where many people share a single room. in light of the spread of microorganisms, what patients would be good candidates to occupy these rooms?