Got this from google, scientists count a species population by first knowing the population in a certain area or small geographical sample location then multiply the result by the total area.
Answer:
The heat equation can be written as. ∂ u ∂ t = α ∇ 2 u. where u(x, y, t) is the temperature field that varies in space and time, and α is the thermal diffusivity constant.
Oil, turf, gas, and wood are popular.
The Trump administration plans to immediately turn back all asylum seekers and who attempts to cross the southwestern border between the legal ports of entry. We looked at more than 2,000 ill children across China, where the pandemic began. We compiled some helpful hints about how to keep safe.
Some vaccines are made out of egg proteins, which is why it is imperative for those administering them to ask if the patient has an egg allergy. Some vaccines may cause a severe allergic reaction. However, if hives are all the patient gets from eggs, the vaccines are still administered. If they get more than hives, they are closely monitored if given the vaccine.
