The Oak Tree Fungal Pathogen, Phytophthora Ramorum, Has Migrated 800

question 11

Multiple Choice

The oak tree fungal pathogen, Phytophthora ramorum, has migrated 800 kilometers in 15 years. West Nile virus spread from New York State to 46 other states in 5 years. The difference in the rate of spread is probably related to ________.

• A) the lethality of each pathogen
• B) the mobility of their hosts
• C) the fact that viruses are very small
• D) innate resistance

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Definitions:

Marginal Tax Rate

The percentage at which the last dollar of income is taxed, indicating how much tax will be paid on an additional dollar of income.

Total Income

The sum of all earnings or revenue generated by an individual or organization before any deductions.

Marginal Tax Rate

Marginal Tax Rate is the rate at which the last dollar of income is taxed, indicating the percentage of tax applied to your income for each tax bracket in which you qualify.

Total Income

The sum of all earnings and other forms of income received by an individual or entity over a period of time.