What type of conversion is taking place when natural gas is used to heat water?
a.
chemical energy into thermal energy
b.
thermal energy into mechanical energy
c.
mechanical energy into electromagnetic energy
d.
electromagnetic energy into chemical energy

The energy needs of a human population are not affected by

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.