Which of the following best describes how the random sampling method works to estimate population size? An area is broken up into small plots to facilitate counting all organisms living in the entire area.
One line within an area is counted with random units to create a proportion of highly mobile animals.
A complete count of random units of known size within a larger area are used as a representative of the larger area's density to estimate total population size.
Organisms are caught and place into random quadrats to evenly distribute the population.

47

explanation:

ok

i think it is dna, i'm not totally sure but i think it might be.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.