Accidentally having extra variable in a controlled experiment is one way to introduce what to an experiment

Large populations of tortoises inhabited the Galapagos Islands before humans. When humans settled on the islands and introduced goats, the number of tortoises declined. What is most likely the explanation for the decrease in the tortoise population?

A tsunami travel across the ocean at a speed of 500 km/h. If the distance between crests is 200 km, what is the frequency of the wave?

Which statement below is not true? a. Deforestation makes soil vulnerable to drying out. b. Deforestation results in loss of roots that stabilize soil. c. Deforestation prevents desertification. d. Deforestation decreases biodiversity.

When the thermocline is periodically upset during the year, certain materials will be mixed that will result in the greatest productivity of phytoplankton. which materials will have the greatest effect on these organisms when mixed?

Robert Koch is credited with proving the germ theory of disease; that infectious diseases are caused by specific microorganisms.

The activation energy for chemical reactions in living things is relatively high or relatively low?

A client who just has been diagnosed with primary open-angle glaucoma (poag) refuses therapy. the nurse reinforces that it is important for the client to seek treatment. which goal is the nurse trying to achieve?

How can pollution affect marine life?

An older adult client presents with noted burning pain along the thoracic region with a tingling sensation and extreme sensitivity of the skin to touch, but there is no rash present at this time.

Somatic death refers to death a. of nerve cells. b. of a body organ. c. secondary to brain damage. d. of the entire organism.