Plants in the desert

10). Internal and external fertilization both A) produce zygotes. B) occur only among invertebrates. C) occur only among terrestrial animals. D) depend on the use of intromittent copulatory organs. E) occur only among birds.

Sort the parts of a nucleic acid according to whether each occurs exclusively in DNA, exclusively in RNA, or in both types of nucleic acid.

During this step, the pump releases Na + into the extracellular fluid. Na + has now been transported from the cytoplasm to the extracellular fluid.

Match these terms with their descriptions 1. water temperature of lakes and rivers rise 2. carbon monoxide pollutes air 3. fly ash of soot in air 4. soil contamination of water resources 5. sewage contamination of water resources 6.

After mitosis how many chromosomes should there be in diploid cells

What is the next step in the process after a substrate enters the active site of an enzyme? 1) The chemical reaction occurs. 2) New substances called products are formed. 3) The enzyme and the substrate bind to form the enzyme-substrate complex.

A pyramid of energy can be used to illustrate the loss of usable energy at each feeding level in a food web. In which feeding level would the smallest amount of energy be found? autotrophs producers primary consumers secondary consumers

1. Occurs in all body cells 2. Two daughter cells are formed 3. Chromosomes arrange equally on either side of the equator 4. The daughter nuclei each have half the number of chromosomes as that of parent cells 5.

Why do it rain in the sun

Which environmental changes occur faster? global warming oil spill pond succession changing seasons