You visit a museum and see a display showing different ears of cultivated corn collected from various points in human history. The earliest corn ears are very small, whereas the modern ones are very large. What was the driving force behind this change? Select one:

Humans selectively chose to breed larger ears of corn.

A genetic bottleneck

The natural environment favored the survivability of larger ears of corn.

Random genetic drift

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 organ controls breathing? lungs alveoli heart diaphragm

Nucleus has two lobes; contains granules of lysosomal enzymes; functions in attacking parasitic worms and plays complex roles in inflammatory diseases like allergies and asthma. what blood cells are described?