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3 years ago

How are rivers made ?

Biology

2 answers:

Kay [80]3 years ago

8 0

Answer:

Rivers usually begin in upland areas, when rain falls on high ground and begins to flow downhill. They always flow downhill because of gravity. They then flow across the land - meandering - or going around objects such as hills or large rocks.

Explanation:

Hope this helps!

Ugo [173]3 years ago

6 0

Answer:

A river is created when water moves from higher elevation to lower elevation. It usually goes downhill, and can join with other rivers. The river ends when it flows into an ocean.

I hope this helps!

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The structure of a Neuron: ___________ contains nucleus and organelles; _________ receives nerve impulses and conducts it toward

Maurinko [17]

Answer:

The structure of a Neuron: Soma/cell body contains nucleus and organelles; dendrites receives nerve impulses and conducts it towards cell body whereas axon conducts nerve impulses away from the body.

Explanation:

A neuron is the structural and functional unit of the nervous system. A neuron has three main structural components namely, soma, one axon, and many dendrites.

Soma is the metabolic center of the neuron and does not participate in conduction of nerve impulse. Many small extensions arise from the soma and are called dendrites. The function of dendrites is to carry the nerve impulse from axon terminals of the presynaptic neuron towards soma.

One large extension of soma is axon that carries the nerve impulse from soma to the axon terminals.

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3 years ago

Mutagens a. are the sole cause of mutations in DNA. b. come in two basic forms: ionizing and nonionizing radiation. c. decrease

Andre45 [30]

Mutagens increase the likelihood of mutations in DNA.

A mutagen is a chemical or bodily agent able to induce adjustments in DNA referred to as mutations.

Mutations end result both from mistakes in DNA replication or from the dangerous outcomes of mutagens, along with chemical compounds and radiation, which react with DNA and trade the systems of person nucleotides. All cells possess DNA-restore enzymes that try and limit the range of mutations that arise

Examples of mutagens encompass tobacco merchandise, radioactive substances, x-rays, ultraviolet radiation, and an extensive sort of chemicals.

Learn more about Mutations here: brainly.com/question/2570717

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2 years ago

What is the basis of the metric system of measurement?

prisoha [69]

Base units for mass, length, time, and charge, and the number 10. All metric units, quantities, and operations are combinations of these.

Example: 1 micro-Newton (a tiny force) is 1 kilogram-meter per second squared times 10^-6.

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3 years ago

Mosquitoes are classic examples of

Nadusha1986 [10]

Answer:

Explanation:

Endoparasites are parasites that live within the body of its host. Ectoparasites live outside the body of the host. A female mosquito would be an ectoparasite because it lives off of blood by sucking it up from the outside. Endoparasites – Yes, these are inside the host.

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3 years ago

An example of genetic drift

lyudmila [28]

Answer:

A random succession of births results in all other hair colors going extinct within a village full of redheaded people.

Explanation:

Hope this helps

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3 years ago