What is homeostasis? how does it work and why does your body depend on it for survival?

Scientists have developed genetically engineered plants that are pest-resistant. By adding genes to the plant's DNA, they become toxic to insects (but not to plants or animals).

What prevented many geologists from accepting Wegener's theory of continental drift? A. Scientists believed the earth moved around much more quickly than the theory predicted. B. the seafloor was the same everywhere so the continents couldn't drift.

Compare and contrast the three main types of muscle tissue.

The six parts of the digestive tract is called the: a : digestive system b : esophagus c : alimentary canal d : circulation system

Which of the following is an example of dense connective tissue? A. tendons B. cartilage C. hair D. marrow

Name the irregular ridges of muscle lining the ventricles.

Trees planted on hills keep lakes + streams from becoming muddy how?

Cacti in the Arizona desert compete to draw water through the roots because it does not rain much there. Younger plants with smaller roots have a tough time competing with the larger roots of the older plants.

The cell contains 78% water, 12% salt, and 10% other materials. The solution it is in contains 95% water, 3% salt, and 2% other materials. what is the solution?

Winds that cause ocean currents can be affected by the Coriolis effect, resulting in upwelling currents. How would an upwelling current increase the abundance of aquatic organisms?