1. What characteristics of living things does a river have?
Is a river alive?

In explanation.

Explanation:

What characteristics of living things does a river have?

-The abiotic factors are water, oxygen, minerals, temperature, water flow, shade, sunlight, depth. The biotic factors are the plants and animals within the river that use these factors in order to survive and also interact with each other. A river is an ecosystem. ( Abiotic and biotic factors ).

-Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients.

-There are seven characteristics of living things: movement, breathing or respiration, excretion, growth, sensitivity, and reproduction. Some non-living things may show one or two of these characteristics but living things show all seven characteristics.

Is a river alive?

-Defining life is not easy, but generally, most biologists would say "no", a river is not alive. Like living things, rivers represent a flow of material, in this case, water, through them, just as much of the matter in living organisms flows through them.

A river is a nonliving thing. A river moves but it does not change. A river does not need food, water, and air to survive. This thing does not need food, water, and air to survive.

Hope this helps.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.