Alandfill with a plastic or clay liner that prevents the leaking of easter into soil and groundwater is called? a. a sanitary landfill b. a toxic waste site c. an unsanitary landfill d. a recycling center

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

What are the three types of counseling established by marine corps policy?