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alexandr1967 [171]
3 years ago
6

Answer and explain plz:)

Biology
1 answer:
Gekata [30.6K]3 years ago
4 0

Hey There!!

The answer to this is: C) a factor that may affect an experiment or investigation. This is the best answer. A and B can be eliminated. D describes a controlled variable which is more specific than a scientific variable, thus C is the best answer. It is the best description of just a scientific variable. And, The second one is B: Robert Hooke was a famous scientist who experimented with springs (metal coils). He found that the farther you stretched the spring, the larger the force with which the spring pulled back on you.

Hope It Helped!~ ♡

ItsNobody~ ☆

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What kind of atoms typically have unstable nuclei?
nikklg [1K]

B & D

Protons and neutrons are energy particles found in the nucleus of atoms.

Explanation:

The forces that hold the protons and neutrons together in the nucleus are called strong nuclear forces. These forces are attractive over short distances and repulsive over long distances. This is why protons that are positively charged are held together in the nucleus  despite their repulsive tendencies. However, as the nucleus gets larger because of the larger number of protons and neutrons in the nucleus, the distance with which the string nuclear forces are attractive is surpassed.

The binding energy in the nucleus will, therefore, be surpassed by the repulsive forces of strong nuclear forces over long distances causing the atomic nucleus to lose some neutrons.

Learn More:

For more on protons and neutrons check out;

brainly.com/question/1264222

brainly.com/question/12520953

#LearnWithBrainly

8 0
3 years ago
Enkephalins and endorphins are peptides that act like morphine. True or False
mariarad [96]

Answer:

True.

Explanation:

Enkephalins and endorphins are endogenous peptides while morphine is an exogenous peptide.

Enkephalins and endorphins are powerful analgesics 18 to 500 times more than morphine. Hence, morphine is less analgesic than enkephalins and endorphins.

Enkephalins and endorphins act on the  mu, kappa , delta receptors and morphine also acts on the same receptors. All of them has same effects on the body.

Hence, Enkephalins and endorphins are peptides that act like morphine.

4 0
3 years ago
Read 2 more answers
Which planet in the solar system has the most eccentric orbit?
yulyashka [42]

Answer:

Its supposed to be Mercury but earth too so id go for Earth "i hope this helps"

sorry if its wrong

4 0
3 years ago
Read 2 more answers
Primary function of the central vacuole
BlackZzzverrR [31]
To maintain pressure within plant cells and keep structure while growth ensues. Good luck, milady. *Tips his fedora*
7 0
2 years ago
Each species of Galápagos Finch Has a beak suited for eating a particular type of food. How are darling have explained this patt
Lena [83]
<h2>Galapagos Finch </h2>

Explanation:

Darwin's finches are a classical example of an adaptive radiation

  • Darwin's finches common ancestor arrived on the Galapagos about two million years ago,during the time that has passed the Darwin's finches have evolved into 15 recognized species differing in body size, beak shape, song and feeding behavior
  • Changes in size and form of the beak have enabled different species to utilize different food resources such us insects, seeds, nectar from cactus flowers all driven by Darwinian selection
  • From 1831 to 1836, Darwin was part of a survey expedition carried out by the ship HMS Beagle, which included stops in South America, Australia, and the southern tip of Africa
  • At each of the stop, Darwin had the opportunity to study the local plants and animals
  • Darwin found that nearby islands in the Galapagos had similar but nonidentical species of finches living on them,he noted that each finch species was well-suited for its environment and role
  • For example species that ate large seeds tended to have large, tough beaks, while those that ate insects had thin, sharp beaks
  • According to Darwin's idea, this pattern would make sense if the Galapagos Islands had long ago been populated by birds from the neighboring mainland
  • On each island, the finches might have gradually adapted to local conditions (over many generations and long periods of time)
  • This process could have led to the formation of one or more distinct species on each island
  • Darwin developed and refined a set of ideas that could explain the patterns he had observed during his voyage
  • In his book, On the Origin of Species, Darwin outlined his two key ideas: evolution and natural selection
  • Natural selection which also known as “survival of the fittest,” is the more prolific reproduction of individuals with favorable traits that survive environmental change because of those traits; this leads to evolutionary change
8 0
3 years ago
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