What are the 3 types of genetic variation? For a given population, there are three sources of variation: mutation, recombination, and immigration of genes. What would happen if there was no genetic variation? Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk […]
What stays green all year round?
What stays green all year round? Evergreen plants and trees stay green all year long — hundreds of species thrive in climates around the world, including U. S. Department of Agriculture plant hardiness zones 8 through 10. Flowering evergreen plants, trees, shrubs, ground covers and vines bring color to gardens and landscapes. What is the […]
What is it called when the server misses the serve in tennis?
What is it called when the server misses the serve in tennis? Singles – a tennis game played by two players. Second Service – the second serve that the server is allowed after missing the first serve. This serve must be successful or the server will lose the point (called a double fault). What is […]
What is the role of parent material in soil formation?
What is the role of parent material in soil formation? The parent material of a soil determines the original supply of those nutrient elements that are released by weathering and influences the balance between nutrient loss and retention. Organic acids and exudates produced by microorganisms and plants enhance the weathering of minerals and the release […]
How do you reduce standing waves?
How do you reduce standing waves? Low end sounds create standing waves when the reflected sound between walls is directly opposite in phase. By cutting the frequency, you can eliminate the problem. What are the effects of harmonics? Effects of harmonics in the power system Increase in installation and utility costs. Downtime and loss of […]
Why are bones spongy?
Why are bones spongy? Spongy bone reduces the density of bone and allows the ends of long bones to compress as the result of stresses applied to the bone. Spongy bone is prominent in areas of bones that are not heavily stressed or where stresses arrive from many directions. Is spongy bone soft? Though spongy […]
What is killing the coral reefs?
What is killing the coral reefs? Despite their importance, warming waters, pollution, ocean acidification, overfishing, and physical destruction are killing coral reefs around the world. Genetics is also becoming a larger area of coral research, giving scientists hope they might one day restore reefs with more heat tolerant coral. How are humans killing coral reefs? […]
Why is SI easier than the English system?
Why is SI easier than the English system? There are several reasons why SI is preferred to the old English system of measurement: SI uses base 10, just like our number system, so it is much easier to learn, remember and convert between units. The prefixes used in SI are from Latin and Greek, and […]
How does the body farm get bodies?
How does the body farm get bodies? The bodies typically come from Texas hospitals, funeral homes, or medical examiners’ offices; from there, they are strapped to a gurney, loaded into cargo vans, and brought to the ranch, where researchers and student volunteers begin their research on the corpses. What is the basic purpose of a […]
Can I check my iron levels at home?
Can I check my iron levels at home? The BIOSAFEAnemia Meter is the first FDA-approved, hand-held device that can be conveniently used at home to test hemoglobin levels (Figure 1). Low levels of hemoglobin may indicate anemia. Thus, the Anemia Meter may be used as an additional screening method. It is not recommended for use […]