1-
the earth's troposphere is known for being he layer of the atmosphere
select one:
a. that is the highest in elevation above the earth's surface
b. where meteors burn up on their descent
c. that is closest to the earth's surface and contains the weather
d. that contains the ozone layer

as a result of the experiments of lavoisier, you know that in a chemical reaction the mass of the products
select one:
a. cannot be predicted based on the mass of the reactants
b. s less than the mass of the reactants
c. is twice as great as the mass of the reactants
d. always equals the mass of the reactants

this is the site of cellular respiration in all eukaryotes.
select one:
a. lysosomes
b. ribosomes
c. chloroplasts
d. mitochondria

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.