Answer:
A carbon footprint deals with the resource usage but focuses strictly on the greenhouse gases released due to burning of fossil fuels. Greenhouse gas calculation make up a portion of an ecological footprint. An ecological footprint compares the total resources people consume with the land and water area that is needed to replace those resources, it measures the demand human populations put on nature. Both calculations illustrate the impact of human activity on the environment.
Explanation:
Answer: (C6H10O5)n
Explanation: The basic chemical formula of the starch molecule is (C6H10O5)n. Starch is a polysaccharide comprising glucose monomers joined in α 1,4 linkages. The simplest form of starch is the linear polymer amylose; amylopectin is the branched form.
Explanation:
These sugars are transported across the plant by the phloem, a mechanism known as translocation. Sinks are sugar distribution points such as roots, young shoots, and developing plants. The product of photosynthesis is transported from source of production to the storage organs through Phloem
B. in the walls of the tract organs
C. in the pons and medulla
D. only in the esophagus because this is the only part of the tract that needs to change to accommodate food passage
Answer:
Direct observation of evolutionary change: creation of drug-resistant bacteria.
Fossil record: discovery of transitional forms of animals, discovery of shells of extinct organisms
Homology: similarities in mammalian forelimbs, identical genetic code in fireflies and tobacco plants, vestigial pelvis in right whales
Biogeography: resemblance of endangered island species to neighboring mainland species,
Direct Observation of Evolution:
Direct observation of evolution involves studying the changes in a population over a relatively short period of time. One example of direct observation is the development of antibiotic resistance in bacteria.
Scientists have observed that certain strains of bacteria can evolve resistance to antibiotics through genetic mutations and natural selection. By exposing bacteria to antibiotics in laboratory experiments, researchers can directly observe the process of evolution as the bacteria adapt and survive in the presence of the drugs.
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