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Dmitrij [34]
3 years ago
15

What two nations were at the center of the Space Race in the 1950's Australia and Russia .China and United States .United States

and Russia .
Russia and China​
Biology
1 answer:
g100num [7]3 years ago
4 0

Answer:The Space Race was a 20th-century competition between two Cold War adversaries, the Soviet Union (USSR) and the United States (US), to achieve superior spaceflight capability.

Explanation:

i looked it up

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Classification is a way of grouping organisms based on the _______they share.
Feliz [49]

base on their characteristics they share

5 0
3 years ago
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Explain why the intracellular and extracellular surfaces of the phospholipid bilayer are polar.
yulyashka [42]

Answer:

A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water.

Explanation:

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3 0
2 years ago
The pupil is the adjustable opening in the center of the eye through which light enters. transparent structure that focuses ligh
Black_prince [1.1K]

Answer:

1) IRIS

2) LENS

3) RETINA

4) Fovea Centralis

Note: Answers 1 - 4 follows question pattern

Explanation:

The PUPIL is the hole in the MIDDLE of the IRIS of the eye, through which light passes to be focused on the RETINA.

The IRIS is the contractile membrane perforated by the pupil, which adjusts to control the amount of light reaching the retina, and which forms the colored portion of the eye

ACCOMMODATION is the change in the adjustment of the eye lens to help focus light ray.

RETINA helps to receive light rays that the lens has focused. It contains two cells: rods and cones

Fovea Centralis is at the center of the retina responsible for sharp and accurate vision, also it is where cones cells cluster.

7 0
3 years ago
_______________ refers to the tendency of a foundation material (such as soil) that is water-logged to lose its internal cohesio
dybincka [34]

Answer:

<u>Liquefaction</u> refers to the tendency of a foundation material (such as soil) that is water-logged to lose its internal cohesion and mechanically fail to provide support during earthquake shaking.

Explanation:

Liquefaction occurs when an unbound material (usually sand), which is saturated in water, loses its resistance to shear due to intense and rapid vibration (earthquake), which breaks its granular structure by reducing its inter-granular pressure and flow like a liquid because of an increase in pressure.

Liquefaction usually manifests itself in loose, saturated and non-cohesive soils, formed by young deposits of sands and sediments of similar particle sizes. If the soil is dense there will be less chances of liquefaction. Older deposits, in general, are more dense and cohesive. At higher density, more interstitial pressure is needed for liquefaction to occur.

8 0
3 years ago
If a Pacemaker is not placed in a patient, what does the heart do to compensate for that loss?
Soloha48 [4]

Answer:

When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.

Explanation:

Happy to assist! If you have any questions or comments, plz comment in the boxes below! Have a wonderful day!!!!!!

                   -Mackie

3 0
3 years ago
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