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.

Which of these would you be most likely to find in a swamp? O A. Sand dune B. Cypress tree O O C. Drought-tolerant shrub O D. Pink-flowering goat's foot

What single characteristic does all life on earth have in common? A - all organisms use the same process to produce lipids B-all organisms transfers hereditary information through proteins C-all organisms transfers hereditary information through Dna

Which medullary index indicates a human hair? A. 0.653 B. 0.733 C. 0.516 D. 0.256

Carbohydrates for monomer

Which of the following is an example of gene flow? 1. A forest fire kills 50 percent of red-spotted chipmunks in a forest community. 2. Pollen from a yellow daisy travels across a stream and pollinates an orange daisy. 3.

Which system and rationale best pairs with the musculoskeletal system to ensure fluid movement of the human body? 1. the digestive system, to obtain the energy that is needed to move the muscles with smooth, coordinated effort 2.

What is a weak, temporary bond

Why does the need for living space cause problems for some organisms?

Name two factors that will determine whether a non native species becomes an invasive species

Soaps, by themseives, are examples of a. surfactants. b. degerming agents. c. antiseptes d. both a and b.