An idea proposed to explain observations is called a

Which of the following reasons best explains why a scientist would want to use Charles Darwin's ideas on natural selection to study which traits are most beneficial to genetically altered mice?

What is a sustainable practice?

How do you think that Climate Change will affect the Ozone Layer if our planet begins to warm?

The most consequential nucleotide in an amino acid codon isthe last nucleotide a. true b. false c. both a and b are correct d. both a and b areincorrect e. none of the above istrue

Which is an example of a vestigial structure? (A) forelimb of a whale (B) wings of an eagle (C) pelvic bone of a whale (D) tailbone of a monkey

Can energy be transferred from animal to animal

The more stomata the more water loss?

Why does it take a long time to develop a new variety of tomato? A. Changes in traits happen gradually, over many generations. B. Many plants resist change. C. Tomatoes cannot acquire new traits. D. A species cannot change over time.

Select the one true statement. Vacuoles store nutrients, water, and waste in animal cells. Plant cells can have chloroplasts but do not have a cell wall.

Using water more effectively A. Protects the environment B. Causes the loss of natural pollution filters C. Increases with contamination D. All of the above