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ahrayia [7]
3 years ago
12

Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction

collapses it, heat and energy build up creating _____.
Biology
2 answers:
Rasek [7]3 years ago
5 0
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
Trava [24]3 years ago
3 0

Answer:

nuclear fusion

Explanation:

Nuclear fusion is a stage that happens during star formation. This begins in the gravitational collapse of a giant nebula cloud. These clouds can span several dozen cubic light years of space and contain large amounts of matter. When gravity collapses the cloud, heat and energy accumulate, the cloud splits into smaller pieces, each centered around a concentration of matter. As these concentrations increase in mass, gravitation corresponds, and with it the whole process accelerates, with the collapse itself creating thermal energy.

Eventually, these parts condense under heat and pressure into gaseous spheres called proto-stars. If a proto-star does not concentrate enough mass, it never reaches the pressure and heat necessary for nuclear fusion, and becomes a brown dwarf.

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Leto [7]

Answer:

1. It serves as the functional unit of the nervous system. <em>b. neurons</em>

2. It collects information from the sense organ such as the eyes and the nose. <em>c. peripheral nervous  system</em>

3. It serves as the primary organ of the  central nervous system. f. spinal cord​  

4. It controls or regulates the body's internal brain environment, including the body temperature,  pulse and respiration rate, and bood pressure. <em>e. autonomic nervous  system</em>

5. It is one of the systems that is directly involved in maintaining the normal functions of cells. <em>d. nervous system</em>  

Explanation:

Neuron: Neurons are the structural and functional units in the nervous system.  Neurons transmit nervous impulses. These cells are formed in general by a cellular body, dendrites that are cytoplasmic extensions that receive stimuli from other cells, and an axon that is a long formation capable of conducting the electrochemical signals. Every neuron forms connections with other neurons. These connections are known as synapsis.

Peripheral nervous  system: Sense information is received by the peripheral nervous system and processed by neurons and synapses in the central nervous system. There are three types of neurons involved in this transmission: sensory or efferent neurons, interneurons, and motor or efferent neurons.

Spinal cord: The nervous system might be divided into the central nervous system and peripheral nervous system. There are two organs involved in the central nervous system that funtion as control centers. One of them is the brain, and the other organ is the spinal cord, surrounded by the vertebral column.  

Autonomic nervous  system: The autonomic nervous system is conformed by the sympathetic nervous system and the parasympathetic nervous system. It has too many functions in the organisms, controlling pressure, heart bitting, body temperature, sexual responses, urination, digestion, general metabolism, among others. It controls and regulates the whole organism.  

The nervous system: Homeostasis refers to stability, balance, or equilibrium. The organism needs to maintain homeostasis to guarantee the correct functioning of cells, tissues, organs, and so on. The homeostatic regulation is controlled by the endocrine system and by the nervous system, which acts as the control center.

4 0
2 years ago
fossils in _____ layers of rock are generally estimated to be _____then fossils found in the deeper layers A. older,younger B. n
Liula [17]
Your answer is (B.)
Fossils in newer layers if rock are generally estimated to be younger than fossils found in the deeper layers because it is closest to the surface. The soil and earth didn't have enough time to "bury" the remains of the dead animal ( Bury is used for a simpler term) underground. The farther down a fossil is the more likely it is older unless the animal tends to burrow. Seeing as the question is probably talking of older animals that is unlikely for an animal to burrow that far. So your answer is B.
8 0
3 years ago
Read 2 more answers
Please help me ~15points~<br> EXPLAIN WHAT HEAT INDEX IS?
Juliette [100K]

Answer: The heat index is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade.

Explanation: did the test

5 0
3 years ago
According to the text physical exercise in late adulthood encourages the birth of new neurons in areas responsible for learning
Sindrei [870]
The answer is <span>neurogenesis and hippocampus</span>
7 0
3 years ago
Which best compares animal behavior and social behavior?
alexandr1967 [171]
The way they talk and work together
5 0
3 years ago
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