The white blood cells ___.

A. Are the major infection fighters in the blood stream

B. Are the chambers of he heart

C. Carry oxygen from the lungs throughout the body

D. Are the enzymes which facilitate digestion

1. What is an atom? the basic unit of a chemical element

What part of a red blood cell gives it the red color? a. platelet b. trachea c. hemoglobin d. capillary

If a population of four o'clock flowers consists of five RR plants (red flowers), two Rr plants (pink flowers), and one rr plant (white flowers), the phenotype frequency of plants with pink flowers is: a) 0.125. b) 0.25. c) 0.5. d) 0.75.

Describe the symptoms or signs of this poisonous/toxic plant in livestock.

Simon and his friends are working on an experiment to determine the most common blood type group in California. Which of these methods would be the best form of data collection?

How dose one determine when an ecosystem is in balance

How does respiratory system relate to respiration making ATP?

What is the largest group of reptiles that ever lived?

What best describes somatic mutations

Ben is an entomologist studying ant behavior. He wants to know whether ants are pollinators for a specific plant. In which stage of the plant's life cycle should he check whether a significant number of adult ants are acting as pollinators? A.