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yan [13]
2 years ago
5

What was discovered in 1965 and is believed to be leftover thermal energy from the big bang?

Biology
2 answers:
RideAnS [48]2 years ago
7 0

Background radiation

Alex777 [14]2 years ago
4 0

The correct answer is Background Radiation.

The Cosmic Microwave Background radiation was emitted 13.7 billion years ago, that is hundred thousand years after the Big Bang.

The radiation is known to be the remnant leftover of the big bang. The temperature of earth was very hot previously. The radiations emitted at that time has been considered as the leftover thermal energy from the Big Bang.

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An uncharged atom of calcium has an atomic number of 20 and an atomic mass of 43. How many electrons does calcium have?
xenn [34]

Answer:

Since it has no charge it would have 20 electrons .

8 0
2 years ago
Visual and hearing receptors are irreplaceable, but the taste and olfactory receptors are continuously renewed True False
8090 [49]

The given statement is True.

Visual Receptors: Rods and cones are the two types of cells present in the retal part of eye which works as a visual receptors which establishes a synaptic network involving neurons which connects the receptors to brain and help us in visualizing. However loss of neurons in the retina because of any kind of physical or biological damage permanently cuts the connection of receptors with brain and it cannot be replaced naturally.

Hearing receptors: Inside the ears there is a small structure known as cochlea which contains the organ of corti which further contains the hair cells [sensory cells] working as hearing receptors but research till date concludes that mammalian cochlear hair cells do not regenerate, either spontaneously or after damage.

Taste receptors: The small little bumbs present of our tongue are known as papillae whioch functions as taste receptors as they contain taste buds. Scientifically there taste buds die off and regenerate every few weeks.

Olfactory receptors: These receptors keep on replacing due to continuous differentiation of basal cells which develop and are capable of restablishing the connection with Central nervous system.

Learn more about nervous system her,

brainly.com/question/13487019

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8 0
1 year ago
Describe the environmental advantages and disadvantages of using hydroelectric power to generate electricity in the UK.
irinina [24]
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3 0
3 years ago
Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-inten
guajiro [1.7K]

Answer:

99 to 138.6 bpm

Explanation:

The heart rate of an individual is a measure of how many times the heart beats in a given time, usually measured in beats per minute (bpm).

Resting heart rate is the number of beats per minute when an individual at rest. Generally, it can be understood that the lower the resting heart rate, the more physically fit an individual is.

The maximum heart rate for an individual is 220 minus their age. The target heart rate for moderate physical activity is 50-70% of the maximum heart rate and for vigorous physical activity it is 70-85% of the maximum heart rate.

Based on Holly's age, her maximum heart rate is 220 - 22 = 198 bpm

Her heart rate zone for moderate physical activity is 50-70% of 198 bpm: 99 to 138.6 bpm

Her heart rate zone for vigorous physical activity is 70-85% of 198 bpm: 138.6 to 168.3 bpm

7 0
2 years ago
19) Define the following terms: -<br>(1)<br>Species<br>(ii)<br>Binomial nomenclature:​
inna [77]

Answer:

A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring. ... The term species can also be defined as the most basic category in the system of taxonomy.

binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts

4 0
3 years ago
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