Which of the following statements accurately describes systems for classifying organisms ?

a .

systems of classification have remained fairly constant since aristotle and the ancient greeks .

b . new species may be added to systems of classification , but everything above the genus level is fixed .

c .

systems of classification can be adapted in many ways when new scientific evidence is discovered .

d . many changes were made to classification systems in the past , but the current system is fixed .

Knowing if a patient has tuberculosis, hepatitis b, or aids is important because a. serious illnesses should be avoided. b. they could compromise the vital sign readings. c. cross-infection may occur. d. they can't be cured.

Most of the world's booming population growth is occurring in countries that arenot highly industrialized. the high birthrates in these countries often result inlower standards of living. which of the following would be the best solution tothis global economic problem? o a. encouraging developing countries to participate in global tradeob. creating an international seed bank to protect biodiversityoc. forming strict regulations on greenhouse gas emissionso d. establishing international agreements to prevent overfishingis it a b c d

In which way does nicotine cause addiction? by stimulating the brain's pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety