Tench fish can’t survive salt concentrations beyond 1%. in which two areas can these fish be found?
lakes
oceans
rivers
seas

Lakes and rivers

Explanation:

Lago is the name used to designate a naturally formed depression that constantly stores a large amount of water. The water contained in a lake can have several origins, such as: own spring, rainwater, salt water from ancient seas, rivers and melting glaciers. The salt concentration in the lakes is greater than the concentration that allows the tench fish to survive. The same happens with the concentration of salt in rivers.

A river is a watercourse that flows naturally from a higher area to a lower one of the relief, usually flows into another river, lake or sea. These water courses are formed from rain, which is absorbed by the soil until it reaches impermeable areas in the subsoil where it accumulates, constituting what we call groundwater.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602