Aluminum (Al) has an atomic number of 13 and an atomic mass of 27. Which of the following correctly shows the electron arrangement for aluminum?

1. 2, 11

2. 2, 8, 1

3. 2, 8, 3

4. 2, 8, 17

Which statement best describes how the environment influences the traits of an individual? A) The environment influences the genotype but not the phenotype of the individual.

Chemical germicides a may react irreversibly with proteins/enzymes. b may react with cytoplasmic membranes or viral envelopes. c may be disinfecting or even sterilizing. d are sensitive to dilution factor, time of contact, and temperature of use.

Neutrophils are the most abundant phagocytic cells. how do they differ from other phagocytic cells?

Which is a correct statement about the relationship between the immune system and other systems? The lymphatic system works with the circulatory system but not the immune system. The immune system works independently to protect the body from harm.

Jake concluded that the runoff had little effect on the dissolved oxygen levels, and Aisha concluded that the runoff had a major effect on dissolved oxygen levels.

What is the evolutionary history of an organism

Explain how cell division relates to growth and why cell division is important

Explain the presence of dissolved particles on one side of a membrane results in diffusion of water across the membrane

Which of the following documents must be given to every patient or patient's caregiver before administration of a vaccine covered under the National Childhood Vaccine Injury Act (NCVIA) ?

Create a model to show how pesticide resistance occurs. Include all of the following: fitness, pesticide, insects, variation, overproduction, competition, natural selection. (your model will be a written explanation)