1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vredina [299]
2 years ago
8

briefly describe the nebula theory formation of our solar system use the words protostar and protoplanets in your discussion

Biology
1 answer:
MAXImum [283]2 years ago
7 0

Answer:

Below!

Explanation:

Currently the best theory is <u>the Nebular Theory. </u>This states that the solar system developed out of an interstellar cloud of dust and gas, called a <u>nebula. </u>This theory best accounts for the objects we currently find in the Solar System and the distribution of these objects. <u>The Nebular Theory </u>would have started with a cloud of gas and dust, most likely left over from a previous supernova. The <u>nebula</u> started to collapse and condense; this collapsing process continued for some time. The Sun-to-be collected most of the mass in the nebula’s center, forming a <u>Protostar.</u>

A <u>protostar</u> is an object in which no nuclear fusion has occurred, unlike a star that is undergoing nuclear fusion. A <u>protostar</u> becomes a star when nuclear fusion begins. Most likely the next step was that the nebula flattened into a disk called the Protoplanetary Disk; planets eventually formed from and in this disk.

Three processes occurred with the nebular collapse:

  • Temperatures continued to increase
  • The solar nebula spun faster and faster
  • The solar nebula disk flattened

The orderly motions of the solar system today are a direct result of the solar system’s beginnings in a spinning, flattened cloud of gas and dust.

Hoped this helped.

-BrainiacUser1357-

You might be interested in
The Dub in “lub dub” is the closing of the ____________________ and _____________ valves because pressure in the arteries is gre
astraxan [27]

Answer:

The first heart sound (lub) can be heard the loudest at the mitral area. This sound represents the closure of the mitral and tricuspid valves and is a low pitched, dull sound at the beginning of ventricular systole. S2 – The second heart sound (dub)

4 0
3 years ago
Which is the least specific group? *<br> A. Order<br> B. Class<br> C. Kingdom
ira [324]

Answer:

C. Kingdom

Explanation:

it is the largest and thus the variety is much greater in this group then the rest

4 0
3 years ago
Read 2 more answers
4. What is viscosity and how is it related to blood flow?
maria [59]

Increasing evidence supports the importance of hemodynamic forces that are directly related to the work of the heart as the primary triggering event of atherosclerosis and atherothrombosis. The factors that primarily determine the work of the heart include systolic blood pressure (BP), blood viscosity, and the volume of blood the myocardium has to pump.

The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase. Because of the dependence of systemic arterial BP on cardiac output and TPR, if blood viscosity and TPR rise, systolic BP must then increase for cardiac output to be maintained. Consequently, blood viscosity has been established as a major determinant of the work of the heart and tissue perfusion [1]. Since increased viscosity requires a higher BP to ensure the same circulating volume of blood, both the burden on the heart and the forces acting on the vessel wall are directly modulated by changes in blood viscosity.

Three important studies helped establish the relationship between blood pressure and blood viscosity. The earliest study observed 49 normal subjects and 49 patients with untreated essential hypertension, showing a direct correlation between BP and blood viscosity among both normotensive and hypertensive subjects (p<0.001). Systolic blood viscosity was 8 to 10% higher in hypertensive patients compared with normotensive controls, and diastolic blood viscosity was 16 to 28% higher in hypertensive patients. Subgroups each comprised of 25 subjects having matched hematocrits were also compared, and viscosity remained significantly higher in hypertensive subjects (p<0.05). [2]

plz mark me as brainliest :)

3 0
3 years ago
Widow's peak is dominant to straight hairline, and freckles are dominant to no freckles.
xenn [34]

The phenotype ratio would be 25% each for widow's peak and freckles, widow's peak without freckles, straight hairline with freckles, and straight hairline without freckles.

<h3>Dihybrid crossing</h3>

Genotype of the heterozygous parent: HhFf

Genotype of the other parent = hhff

Crossing the two parents:

HhFf = 1/4 = Widow's peak, freckles

Hhff = 1/4 = Widow's peak, no freckles

hhFf = 1/4 = straight hairline, freckles

hhff = 1/4 = straight hairline, no freckles.

More on dihybrid crossing can be found here:brainly.com/question/1185199

#SPJ1

8 0
2 years ago
Select the correct answer.
posledela

Answer:

complex carbohydrates

3 0
2 years ago
Other questions:
  • Four floral organs of a complete flower
    6·1 answer
  • Two bird populations live on opposite sides of a mountain range. One particularly harsh winter, the blue birds on the north side
    15·1 answer
  • Name the 1st stage of interphase &amp;tell what happens to the cell
    15·1 answer
  • Can anyone pls help me with #63,64 i rlly need help i have exam about this next week
    12·2 answers
  • What is the anology between cells and a factory
    13·1 answer
  • What is a common misconception of evolution?
    9·1 answer
  • How can mutations in populations be benifical for survival of the species?
    11·1 answer
  • Which of the following substances will cross the cell membrane through
    14·2 answers
  • -6
    5·1 answer
  • Please answer both of them.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!