Which of the following is an example of microevolution? a caterpillar changes form into a butterfly. a population of birds slowly changes feather color from red to blue. a dinosaur species evolves over time into a bird species. a black cat has kittens with white spots.

Diffusion and osmosis are forms of passive transport

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas

What methods do scientists use to predict volcanic eruptions? select all that apply