The circulatory system of a vertebrate that uses lungs for respiration has

A. Three or more loops.

B. No loops.

C. A single loop.

D. A double loop.

decomposers 3 a diagram that shows the connections among food chains in an ecosystem 2. food chain 2 line of plants and animals that shows the order in which organisms are eaten 3. food web 5 related to or possessing motion 4.

Janice tests the effects of the sunlight on bean seed germination. what is the independent variable?

List one advantage and one disadvantage of asexual reproduction.

Is there a pattern to the volcano distribution around the planet?

Suppose tou wanted to decrease the pH of solution. What could you do to decrease the pH? Support the prediction.

Is a chameleon a lizard?

Which answer is a type of muscle tissue in the human body humoral cardiac digestive pulmonary

Select all the correct answers. According to Newton's law of universal gravitation, which statements are true? As we move to higher altitudes, the force of gravity on us decreases. As we move to higher altitudes, the force of gravity on us increases.

To amplify and express a gene of interest, it must first be cut out of the chromosomal DNA and inserted into what? A) restriction enzyme B) agarose gel C) vector D) none of these

Which statement is correct about the total mass of glucose and oxygen formed during photosynthesis? It is equal to the total mass of carbon dioxide used. It is less than the total mass of carbon dioxide used.