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2 years ago

Which factor activates a convection current, starting the flow of a fluid?

Biology

2 answers:

Levart [38]2 years ago

6 0

Answer:

temperatures differences in the mantle

Explanation:

It's the temperature differences in the mantle. Warmer magma near the core rises because it becomes less dense. It reaches the surface, pushes against the tectonic plates, then cools and falls back down to be replaced by new warm magma.

These happens in volcanic eruption and leads to the formation of volcanic rocks.

Eddi Din [679]2 years ago

4 0

Answer:

The factor that activates convection is the mass

Explanation:

Convection is a mechanism of heat transfer (there are also the phenomena of conduction and radiation), produced by the displacement of mass through the fluid. Example: when heating water in a saucepan, contact with this solid surface produces circulation due to the gradient of temperatures that occur in the fluid in question, in this case the water.

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A condition in which excess cerebrospinal fluid accumulates in the brain is called

svp [43]

Answer:

It's called <em>hydrocephalus</em>.

Explanation:

Hydrocephalus is a condition in which cerebrospinal fluid builds up within the ventricles of the brain and it may increase pressure within the head.

3 0

3 years ago

We have talked about the central and peripheral nervous systems. We know that the peripheral nervous system relays signals to an

JulsSmile [24]

Answer:

The peripheral nervous system has - Somatic nervous system and Autonomic nervous system.
These systems control our body action by this controls all the types of muscles.

Explanation:

Somatic nervous system have - Cranial nerves and Spinal nerves

Autonomic nervous system have - Sympathetic and Parasympathetic system.

The somatic nervous system controls our voluntary and involuntary actions by cranial and spinal nerves and controls all three types of muscles such as cardiac, smooth and skeletal.

The autonomic nervous system controls the involuntary actions of our internal organs.

The sympathetic and parasympathetic system relates to all types of muscle.

The sympathetic and parasympathetic system accelerates and decelerates the heart beat respectively, by this controls the cardiac muscle.

The sympathetic and parasympathetic system stimulates and relaxes our internal organs respectively, by this controls the smooth muscles.

The sympathetic and parasympathetic system prepares our body as a whole for a action and also relaxes our whole body respectively, by this controls the skeletal muscles.

5 0

2 years ago

Explain the different levels of cellular organization.

JulijaS [17]

There are 5 different levels of cellular organization.

Cells, tissues, organs, organ systems and whole organisms. Cells hold genetic material and absorb outside energy.

Tissues make up the bones, nerves and connective fibers of the body. Organs work to perform specific bodily tasks, such as filtering blood. Organ systems are groups of organs that perform a specific kind of function together, such as digesting food.

Together, these smaller systems make up an entire living organism which can grow and then go onto reproduce.

Explanation:

5 0

3 years ago

AUGGCGUUU which of the following DNA strands could have been the template for this RNA?

Delvig [45]

Answer:

3' TACCGCAAA 5'

Explanation:

Transcription is the process by which a particular DNA sequence (e.g., a gene) is used as a template to synthesize a complementary RNA sequence that grows in a 5′ → 3′ direction. This RNA molecule is usually a messenger RNA (mRNA) which is then used to synthesize a polypeptide chain (i.e., a protein) by a process called translation. The complementary RNA molecule produced during transcription is synthesized according to the base pair rules, i.e., Adenine (A) bases always pair with Thymine (T) bases, while Guanine (G) bases always pairs with Cytosine (C) bases. In RNA, Uracil (U) bases pair with adenine, thereby replacing thymines during transcription.

7 0

2 years ago

Choose the words that correctly fill in the blanks: Charles Darwin is known as the "Father of Evolution" because he proposed the

kakasveta [241]

Answer:

B.Evolution, natural selection

Explanation:

Charles Darwin is known as the "Father of Evolution" because he proposed the idea of evolution by way of natural selection.

3 0

1 year ago

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