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AnnZ [28]
3 years ago
14

Five-year-old Trevor is emotionally disturbed and refuses to communicate with anyone. To get him to speak, his teacher initially

gives him candy for any utterance, then only for a clearly spoken word, and finally only for a complete sentence. The teacher is usingthe method ofA) secondary reinforcement.B) delayed reinforcement.C) spontaneous recovery.D) shaping
Biology
1 answer:
o-na [289]3 years ago
6 0

Answer:

sounds like shaping to me

Explanation:

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Explanation:

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Rank the following in order from most general to most specific: 1. gametic isolation 2. reproductive isolating mechanism 3. sper
mihalych1998 [28]
<h2>Reproductive Method </h2>

Explanation:

<em>The rank in order from the most specific which is following .</em>

<em>(1) Reproductive isolating mechanism</em>

<em>(2) Sperm-egg incompatibility in sea urchins</em>

<em>(3) Gametic isolation </em>

<em>(4)Prezygotic isolating mechanism</em>

<em>(1) Reproductive isolating mechanism-</em> The components of regenerative confinement are an assortment of transformative instruments, practices and <em>physiological procedures basic for speciation.</em> They keep individuals from various species from delivering posterity, or guarantee that any posterity are sterile.

(<em>2) Sperm-egg contradiction in ocean urchins-</em> Bindin is a gamete acknowledgment protein known to control species-explicit <em>sperm-egg grip</em> and layer combination in ocean urchins.

<em> (3)Gametic isolation - Prezygotic hindrances </em>keep preparation from occurring. Gametic disengagement is a sort of prezygotic hindrance where the<em> gametes (egg and sperm) </em>come into contact, yet no preparation happens. Gametes might be not able to remember each other in various species  

<em> (4) Prezygotic isolating mechanism- </em>while postzygotic segregation forestalls the arrangement of rich posterity. Prezygotic systems incorporate environment segregation, mating seasons, "mechanical" disconnection, gamete detachment and conduct seclusion. 

4 0
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A pathogenic strain of bacteria has become resistant to an antibiotic that once could kill it. What has happened to these bacter
Andrews [41]
The answer is <span>-Only the few bacteria that were immune to the antibiotic survived and reproduced, making all their offspring immune to it as well.

Bacteria (or any other organism) are not able to make changes to their DNA in order to protect themselves or to learn to remove the receptors on their cell surfaces. If they were able to produce toxins against the antibiotics, they would all survive.
These leave the second choice as the correct answer. This is the real situation, and is a good example of natural selection.</span>
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A chronic neurological disease that involves an imbalance of the levels of neurotransmitters, dopamine, and acetylocholine, is c
SVETLANKA909090 [29]
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3 0
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FinnZ [79.3K]
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Explanation

It’s very dry in the Southwest. They get hardly any precipitation and it’s very hot.
8 0
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