All of the following are traits of echinoderms except

a. five-part radial symmetry.

b. a pair of antennae.

c. tube feet.

d. an internal skeleton.

What sort of evidence can you use to show that all living things grow and develope

What is the basic mechanism by which air travels to the alveoli for gas exchange? emt?

Ques. what will happen if the stretch receptors of the urinary bladder wall are totally removed? a) there will be no micturation b) urine will not be collected in bladder c) micturation will continue d) urine will continue to collect normally in

Which waste is excreted by bony fishes, by mammals, and by insects?

Describe the development of tools and technologies used in space exploration

If a volcano were to erupt and release large amounts of ash into the air, how would this affect the climate on Earth? a. The ash would increase the greenhouse gases, thus increasing temperature. b.

What is the purpose of implantation pregnany?

Ivy starts to get into the hot tub, but the water feels extremely hot. She stands in the water for a few moments, then slowly eases the rest of her body down into the water.

The differences between hashimotos' thyroiditis and grave's disease include b. only hashimoto's is a type ii hypersensitivity a. only grave's disease is an autoimmune disease c.

How could natural selection lead to evolution?