What are the issues around the use of biofuels as an alternative to fossil fuels?
What will be an ideal response?
Biofuels are made up of dead living things, such as sugarcane. However, using food crops to produce fuel so that we can run our vehicles may cause food prices to rise. There are also concerns that irrigating biofuel crops will add to our shortage of water.
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Which of the following processes is not involved in the hydrologic cycle?
a. chemosynthesis b. transpiration c. precipitation d. evaporation e. condensation
When chloroplast pigments absorb light, _____.
a. they become reduced b. they lose potential energy c. their electrons become excited d. the Calvin cycle is triggered e. their photons become excited
A heritability value of 0.997 indicates which of the following?
A. The majority of the phenotypic variation has a genetic basis B. The majority of the phenotypic variation has an environmental basis C. The trait is polygenic D. There is a significant difference between the two strains
Answer the question using the accompanying figure. During metamorphosis of a tadpole, TSH is active at ____
a. A b. B c. C d. B and C e. A, B, and C