Two conflicting approaches to helping countries through the demographic transition require different types of aid. An attempt to provide aid using both approaches might include
A) desalination plants to bring in more fresh water and distribution of vaccines.
B) shipments of large amounts of food and improvements in sanitation systems.
C) construction of recycling plants and investment in pollution control systems.
D) investments in banks and distribution of birth control.
D
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Body waves can be divided into two types: primary waves and secondary waves. What is the difference between these two types of body waves?
What will be an ideal response?
Why do waves bend or refract as they approach shorelines? What will be an ideal response?
In photosynthesis, carbon dioxide and water in the presence of sunlight yields
1.proteins and oxygen.
2.chlorophyll and oxygen.
3.carbon and oxygen.
4.glucose and oxygen.
Repeatability in an experiment is important because
A. independent investigators must be able to get the same results. B. only independent investigators must be able to get the same results and it helps to support the initial hypothesis. C. it helps to support the initial hypothesis. D. it eliminates bias. E. All of these are correct.