4. Fill in the blanks: What is the best unit for a scientist to use to measure each of the following? (meter, centimeter, kilometer, light-year) a. Distance between Cincinnati and Columbus
b. Height of the Empire State Building
c. Length of an oak leaf
d. Distance between two stars

The rate at which molecules water and oxygen can enter a cell is determined by the-

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.