which of the following is a type of circulatory system open closed both a and b or none of the above

What term refers to the solid copy of the shape of an organism? Cast fossil or trace fossil?

The table shows the values of two quantities for an astronaut on Earth and Mars. Astronaut's Details Earth Mars Quantity A 735 units 279.

Which structure will you find in prokaryotic cells A. Mitochondrion B. Nuclear C. Cell Membrane D. Golgi Body

In what phase of meiosis are tetrads separated as homologous chromosomes are pulled to opposite poles of the cell? cientists have developed genetically engineered plants that are pest-resistant.

Crickets, robins, and raccoons are examples of a. herbivores. b. detritivores. c. carnivores. d. omnivores.

What is ATP, and when is energy released from it

Why do scientists classify fish, amphibians, reptiles, birds, and mammals together in one group?

In what part of cell does replication occur

What factors influence the impact a population has on its environment?

What kind of bonds form between the oxygen atoms of one water molecule and the hydrogen atoms of another water molecule