Many scientists suggest that billions of years ago life on earth began with

What is another wavelength that we cant see

What are traces or remains of organisms that lived in the past? A. adaptations B. mutations C. traits D. fossils

Who is sengi's enemies?

Of the plates listed, which will receive the highest number of hits from the Sun's rays when the Earth is positioned as shown below? A. Plate A B. Plate C C. Plate F D. Plate J

The closer a planet is to the Sun, the its orbital motion is, and the the gravitational force between the planet and the Sun is.

Tightly curled hair is caused by a dominant autosomal gene in humans. This trait is rare among northern Europeans.

The rapid depolarization phase of the action potentials of myocardial contractile cells is due primarily to which ion (s) ?

Echinoderm reproduction typically is a. sexual reproduction by budding. b. sexual reproduction with internal fertilization. c. by regeneraton. d. sexual reproduction with external fertilization.

Which is an abiotic factor of the boomslang's environment? A. the sun B. the tree C. the grass D. the people

A double-stranded molecule of DNA has 80 T nucleotides and 110 G nucleotides. What is the TOTAL number of nucleotides in this molecule of DNA?