The drug was tested on a group of 50,000 elderly patients who had cancer. The tumors in most of the patients did not respond to the treatment.

The scientists concluded that the drug was not effective in fighting cancer.

What is the most important problem with the design of this investigation?

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

What are examples of the plant life and animal life that can be found in each type of terrarium

Which statement best compares aerobic and anaerobic respiration