Which substance in the atmosphere increased in abundance as the result of photosynthetic cyanobacteria

How would a government most likely respond to a slowdown in the economy? A. Decreasing spending in order to grow the economy B. Lowering taxes in order to stimulate spending C. Raising taxes in order to adjust to the new circumstances D.

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6,300 nucleotides.

One way scientists have shown evolutionary history and common ancestry in species is through molecular evidence. True False

List the four major hypotheses mendel developed using his garden pea experiments.

Light and radio waves travel through a vacuum in a straight line at a speed of very nearly 3.00 x 10 8 m/s. How far is ligth year (the distance light travels in a year) ?

Besides ridding the body of wastes formed during cell metabolism, the kidney adjusts blood chemistry in other ways. what are these three other ways?

What happens to alcohol during the cooking process A-it ferments so it is stronger B - it ferments so it is weaker C - it evaporates so it is bitter D-it evaporates so is it wear

When is speciation complete?

Darwin's observations of Galápagos finches support the theory of evolution. Molecular homology of genes, such as Hox genes, provides another type of support for how species evolve. What does this imply about scientific theories? A.

Which of the following statements about amphibians is true? A. Amphibians are represented by about 500 species of frogs, toads, and salamanders. B. Populations of amphibians in a few local areas have declined dramatically in the last few decades. C.