In california there are many species of butterfly. you notice that females of one species lay their eggs near the tip of a plant’s stem (species a). females of another species in the same area lay their eggs at the base of the stem on a different type of plant (species b). the young hatch out as caterpillars; they live on the host plant and eat its leaves. the different plants used by the butterfly species are both abundant and evenly dispersed in the habitat. this suggests that host plant distribution would the distribution of different butterfly species within the habitat.

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Which food could be transported in a galvanized metal container?