This is a substance that is required in large amounts for survival and sustainability.

Which structure of a flowering plant produces female reproductive cells, of eggs? A. stigma B. petal C. ovule

What are keystone species?

What are the monomers of nucleic acids called? a. amino acids b. monosaccharides c. carbon d. nucleotides

What structure provides a protective environment in which the fetus's temperature is well regulated and protects the fetus from friction caused by the mother's movements?

Draw a hypothetical metabolic pathway composed of five substrates, five enzymes, and a product called Biological Sciazine. Number the substrates 1-5, and label the enzymes A-E, in order.

A spore that contains a bacterium's DNA and can survive harsh cinditions is a (n) ?

What is back and faward movement (Ear and sound)

The normal pacemaker of the heart is the

How do daughter cells get their dna

The creature in the photograph is a protist, which is composed of only one cell. This means that a protist A) cannot reproduce. B) is a living organism. Eliminate C) cannot survive in water. D) gets energy directly from sunlight.