#35. In two or three well-developed paragraphs, list the populations that are affected by ultriviolet light and identify the effects on each of these populations.

my answer:

There are four major populations that are affected by ultraviolet light. These include humans, amphibians, marine life, and land plants. There are also several effects of this on each of these populations. Some damaging effects of ultraviolet light on humans are increased incidence of skin cancer, and premature aging of the skin. It also increases incidence of cataracts, and weakens immune response. There are a few effects on amphibians as well. Some of these damaging effects include the death of eggs, and the genetic mutations among survivors. Another effect is reduction of populations. Death of phytoplankton in surface water is a major effect of UV light on marine life. A few others include disruption of food chain and reduction in the number of photosynthesizers. Land Plants have the fewest effects of UV light but they’re still there. They include interference with photosynthesis and reduced crop yields.

How about including some of the positive effects?

http://www.biospherical.com/nsf/student/page4.html

ok, thank you :)

After spraying crops with ddt for several years, farmers found that population of insects pests rebounded. suggest another reason based on what you know about population food pyramid predators and competitors

To find information about the populations affected by ultraviolet light and the effects on each of them, you can use various resources such as scientific studies, research articles, and reliable websites. It is important to consult reputable sources to ensure the accuracy and validity of the information. Here is how you can gather the required information:

1. Start by searching for scientific studies or articles on the effects of ultraviolet light on different populations. You can use academic databases like PubMed, Google Scholar, or ScienceDirect. Enter keywords like "ultraviolet light effects humans," "ultraviolet light effects amphibians," and so on to narrow down your search.

2. Look for research papers or review articles specifically focusing on the populations you mentioned: humans, amphibians, marine life, and land plants. These sources will provide detailed information about the effects of ultraviolet light on each group.

3. In the search results, read the abstracts or summaries of the studies to get an overview of the findings. Make sure to select studies that are recent and published in reputable scientific journals.

4. Once you have selected relevant studies, read them thoroughly to understand the specific effects of ultraviolet light on each population. Take note of any key findings, statistics, or observed effects mentioned in the studies.

5. You can also search for reputable websites or organizations such as the World Health Organization (WHO), Environmental Protection Agency (EPA), or reputable universities that may provide informative articles or reports on the topic.

Remember to critically evaluate the information you find and cross-reference multiple sources to ensure accuracy and reliability. Additionally, consider including proper citations or references when using information from external sources to support your answer.