Are prions organisms? Yes or no and why. also i have these choices if you wanna do that: a) Yes because they can make more of themselves

b) Yes because they can cause disease

c) No because they are not made of cells

d) No because they can't make their own food

What would happen if the krill were removed from the food web

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.