<span>According to the nebular theory stars are formed in which sequence:
a. Interstellar clouds - "nebula" is a Latin word which means clouds. These clouds start to form and are composed of gases like hydrogen and helium.
b.Clumps - as the gases start to form and come together they form clumps of gases that are highly concentrated and they start to grow.
c. Gravitational forces - when clumps have grown into big sizes the gravitational forces that are found within it increases and are converted into kinetic energy of fast-moving particles that continuously bump into each other and create or generate heat.
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d. Nuclear fission - as the clumps keep on colliding and creating heat (18 million degrees Fahrenheit), nuclear fission begins.
e. Outward pressure from the nuclear fission prevents the collapse of the gases, stabilizing the gases eventually creating a star. </span>
We could possibly use water as a fuel source, rather than fossil fuels (which are limited)
Science has already developed something of the sort, and with using water as a fuel source for say vehicles and such, it's inevitable for a positive change to happen because there would be less carbon monoxide; which means less polution.
Answer:
B. we continue to grow new neurons, but we grow fewer new neurons than when we are young.
Explanation:
Scientists have now discovered that you can grow new brain cells throughout your entire life. The process is called neurogenesis. Specifically, new brain cells–which are called neurons.
Hope this helps.
1.
a hierarchical series of organisms each dependent on the next as a source of food.
2.
the series of processes by which food is grown or produced, sold, and eventually consumed.
I. Cerebrum - has many functions including speech, personality, memory
ii. Cerebellum - coordinates movement
iii. Hypothalamus - homeostasis (regulates hunger, thirst, sleep-wake cycle, temperature, blood pressure, heart rate, stomach/intestine activates), produce hormones (oxytocin, antidiuretic hormone), autonomic nervous system control center
iv. Medulla oblongata- controls vital reflexes: heart rate, respiratory rate, blood pressure. non-vital reflexes: sneezing, coughing, vomiting
v. Spinal cord - carry information from the pns to the brain, carry information from brain to PNS vice versa, spinal reflexes
