5. Making Predictions Read the text under the heading "Modeling Global Warming." What difficul-
ties do scientists face when they attempt to construct
models that accurately predict the rate of global
warming?

6. Analyzing Relationships How could environmen-
tal problems in developing countries that result from
global climate change affect the economies of devel-
oped countries, such as the United States?

prokaryotic cells do not have a nucleus in which the dna is stored in, it floats freely inside the cell.

eukaryote cells do have a nucleus in which the dna is stored in.

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands