Which of the following has a knot of nerve tissue at its head end?

a.

octopus.

b.

sponges.

c.

worms.

d.

bacteria.

Select the correct answer. Which item is an example of trace evidence? a A. footprints OB. forged check OC. dead body D. glass shards

Why do farmers refuse responsibility for manure management

A life cycle in which organisms switch back and fourth between diploid and haploid stages- a. is a haploid life cycle b. is a diploid life cycle c. is an alternation of generations life cycle d. does not exist

Identify the elemental makeup of proteins. A. Carbon, Hydrogen, and Oxygen B. Carbon, Hydrogen, and Oxygen in a 1:2:1 ratio C. Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus D. Carbon, Hydrogen, Oxygen, and Nitrogen

What function do most of the stem cells in adults serve? A. Differentiating into any type of cell B. Repairing damaged DNA C. Replacing damaged tissue D. Growing new organs

What is significant about areas in the dna that contain repeated segments?

What does paramecium belong to in the 6 kingdoms?

How does Angiogenesis lead to cancer cells?

Where does most gas exchange between the atmosphere and the pulmonary blood occurs in mammals? question 10 options: a. bronchioles?

Which of the following is a natural result of overpopulation? A. An immediate decrease in predators of the population B. The food runs out and I visuals in the population starve. C.