All vertebrates have

A spinal column of bone and/or cartilage.

A spinal nerve chord.

A brain and paired sense organs.

All of the above

Since 1960, water use in the United States has more than doubled and the demand for water is expected to continue to rise. The greatest use of surface water in the United States comes from A) industrial use. B) thermoelectric power.

In Wisconsin a very large population of lake trout in which individuals mate at random experiences no migration mutation nor selective pressure for a number of years. Which of these is most likely to occur in the population?

What's your philosophy in life?

1. Earth's plates meet at boundaries.

Which statement is not true about fungi? A) A type of fungi is used in bread production. B) Fungi can produce antibiotics. C) Fungi need light for photosynthesis. D) Fungi are decomposers.

A mutation is found that prevents transcription of the HOX3A gene, which is known to be on chromosome 12. Genetic mapping of the mutation suggests that it is located on chromosome 11.

This was also called the War of Spanish Succession. a. King Williams War b. Queen Annes War c. Queen Victorias War d. King Johns War

Why do people believe some theories even if they are not supported by credible evidence?

in your own words, explain what a mitochondria is. the funnier, the better. also, answers in the comments are welcome as well.

How does the pulmonary vein differ from the other veins in the body?