Counting the number of organisms in a small area and multiplying to estimate the number in a larger area is called

a.

direct observation.

b.

mark and recapture.

c.

population density.

d.

sampling.

Defanation of evaporqation

If the mass of a pendulum is increased (with other factors controller), would the period (time) decrease or stay the same?

Which describes how transuranium elements are made in a lab? A) by the transuranium of protons to electrons in a stable element B) by the artificial transuranium of carbon compounds C) by the artificial transurianium of lighter elements

Which of the following is the best definition of autoimmune disease? A. a condition in which B cells and T cells respond independently to antigens and do not interact correctly B.

If an element has 10 electrons, how many of them will be in the 2nd energy level?

A 5.00-kg howler monkey is swinging due east on a vine. It overtakes and grabs onto a 6.00-kg monkey also moving east on a second vine. The first monkey is moving at 10.0 m/s at the instant it grabs the second, which is moving at 7.00 m/s.

One of the heating systems we talked about in this course comprises of a system of ducts. What is the process by which heat is transferred in this system? a. Conduction b. Convection c. Radiation d. None of the above

If the north pole of a magnet in a compass is attracted to Earth's geographic north, what must be the polarity of Earth's magnetic north pole? A. north B. south C. It can't be determined from the information given.

A canoe started its trip at 8 am. If the cannoe travelled at a speed of 70 mph how far did it travel by 1:36 pm?

1. Tariff of 1828 John C. Fremont 2. abolitionist who led the raid on Harper's Ferry John Brown 3. published The Liberator Santa Anna 4. Underground Railroad Harriet Tubman 5. died at the Alamo William Lloyd Garrison 6.