An element's atomic number is 39. How many electrons would an atom of this element have?

What is meant by osmosis?

The shapes are based in a basket what is the probability of choosing a triangle A. 12/12 B. 2/12 C. 3/12 D. 4/12

The mid-ocean ridge is formed by the long accumulation of ocean floor sediments and millions of years of their subsequent folding and faulting. a. True b. False

Waves from the Sun travel through?

Which organelles perform roles equivalent to the circulatory, digestive, and respiratory systems?

In frogs muscle tissue is usually grouped into large

after the brain receives information from the body's sensory receptors, what is the next step in responding to this information?

What does the endosymbiont theory explain about the origins of plant and animal cell

Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1 if the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by

What is the average for the following measurements 7.1 g, 9.8g, 2.3g, 8.5g, 7.4g, 5.7g