Consider a 6 kg fish that swims toward and swallows a 2 kg fish that is swimming away at m/s. If the larger fish swims at 2 m/s, what is its velocity immediately after lunch?

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird