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stellarik [79]
3 years ago
6

How did earth become a planet???

Biology
2 answers:
oee [108]3 years ago
4 0
Large fragments of dust and debris clump together to form a planet
Ratling [72]3 years ago
3 0
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
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Which of the following statement(s) is/are true regarding the adrenal glands' relationship with the autonomic nervous system?
Studentka2010 [4]

Answer:

The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:

a. The adrenal cortex is an extension of the parasympathetic nervous system.

c. The adrenal glands are strictly nerve tissue.

d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.

e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.

Explanation:

The  levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord.  Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs.  This alert serves as a warning signal and defense system.  The purpose is to maintain homeostasis.

4 0
3 years ago
The one time my cousin ___(e)d skydiving, the result was a ___. her parachute didn't open, and she was injured so badly in the f
Nikolay [14]
The answer in the spaces provided is venture and calamity. The answer is venture because sky-diving is considered to be a an activity that seems to be adventurous and dangerous in which venture means while it also results into calamity because it causes distress in which she has injured herself.
4 0
3 years ago
Weather is unaffected by continental shifting. true or false
alexandr1967 [171]
Your answer is  going to be true
7 0
3 years ago
Read 2 more answers
In Africa, dragon color is co-dominant. The colors blue and yellow are co-dominant.
pshichka [43]

1 Blue and yellow: 1 yellow

Let us assign the allele for Blue dragon color as B and that of Yellow dragon color as Y and create the punnet square below;

The phenotypic ratio will, therefore, be;

1 Yellow/Blue : 1 Yellow

3 0
3 years ago
You are maintaining a small population of fruit flies in the laboratory by transferring a small number of the flies to a new cul
Lesechka [4]

Answer:

Cross the flies with the flies from another population

Explanation:

Inbreeding is the mating between the closely related individuals of a population. Inbreeding reduces the viability of the progeny over a generation since it increases homozygosity. When the flies of a small population interbred over generations, the increased homozygosity reduces the viability of the flies. To counteract it, one should mate these flies with the flies from another population. This would increase heterozygosity and thereby would increase the survival and fitness of the progeny.

3 0
3 years ago
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