When two people use the same dichotomous key to identify the same organism, is it possible (should it be possible) for them to have different final answers? Explain.

Magma is molten material from the mantle that has reached earths surface true or false

Restriction enzymes are collected from what

A patient with osteoporosis (reduced bone mass) may have a history of health issues. One issue could be not enough skin exposure to the sun to make Vitamin D. weak ligaments. an increase in the absorption of calcium in the digestive system.

Explain the concept of "natural selection" using your moths as an example

Which one of the following choices is not a benefit for breastfeeding infants? A. Decreased susceptibility to infection B. Decreased prevalence of allergies C. Decreased incidence of sleep disturbances D. Decreased likelihood of bacterial meningitis

Which of the following is NOT a component of the lymphatic system? Appendix Spleen Tonsils Adenoids All of the above are components of the lymphatic system.

Explain why cells are typically small?

For plant stem length, the dominant allele for height is T and the recessive allele is t. If a heterozygous parent for tall stem length crossed with a homozygous recessive parent for short stem length, what would be the phenotypes of the offspring?

How big is a western toad

Whats the least permeable type of soil?