6. THINK IT THROUGH You are a farmer in the U. S. Mid- west, own 1000 acres, and intend to farm corn for a liv.
a
ing. Would you choose to grow genetically modified corn?
How would you manage pests and weeds? Would you grow
corn for people's food, livestock feed, or biofuels? Think
of the various ways corn is grown, purchased, and valued
in different places—such as the United States, Europe,
and southern Mexico—as you formulate your answer.

The influenza virus cause the flu, but not other diseases. why?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.