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ra1l [238]
3 years ago
15

How many electrons are there in a completed outer shell for period 1?

Biology
1 answer:
Vaselesa [24]3 years ago
8 0
1 valence electron is present.
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Cacti in the deserts of southwestern North America and some euphorbs of the deserts of Africa, have barrel-shaped stems, short-l
nirvana33 [79]

Answer:

       The right answer to this question is option D. Convergent evolution.

Explanation:

       Convergent evolution is a process defined by when an organism develops the same, or at least near that, characteristics, for a specific reason, but they don't have the same origin. In this case, the cacti in both deserts have pretty much the same characteristics, and this happens because both these plants need water to survive, and in order to save it, they have barrel-shaped stems, short-lived leaves, and spines. All of these things help them in saving the water and capturing it when it's possible.

        The convergent evolution is when both these organisms develop equally, but are not originally from the same place, the environment being the one to shape this.

3 0
3 years ago
Something very acidic has pH of
liq [111]
The answer is 0-5 ----
7 0
3 years ago
Hyperpolarization means that the ________. Group of answer choices membrane potential becomes more negative than the resting pot
gladu [14]

Answer:

Hyperpolarization means that the membrane potential becomes more negative than the resting potential.

Explanation:

The voltage across the membrane of a neuron that is at rest and not sending out signals is called the resting membrane potential, or just the resting potential. The concentration gradients of ions across the membrane and the amount of each type of ion that can pass through the membrane determine the resting potential. When a neuron is at rest, there are different levels of sodium and potassium on both sides of the cell membrane. Ions move down their gradients through channels. This creates a difference in charge, which gives rise to the resting potential.

When the membrane potential at a particular location on the neuron's membrane gets more negative, this phenomenon is known as hyperpolarization. Depolarization, on the other hand, occurs when the membrane potential becomes less negative (more positive). Both depolarization and hyperpolarization can take place as a result of the opening and closing of ion channels in the membrane, which changes the rate at which certain types of ions can enter or leave the cell.

<em />

<em>Your question is incomplete, but most probably your full question was </em><em>Hyperpolarization means that the membrane potential becomes  Group of answer choices </em>

<em>more negative than the resting potential </em>

<em>more positive than the resting potential</em>

Learn more abour hyperpolarization here:

brainly.com/question/12982897

#SPJ4

3 0
2 years ago
Vacuoles are found in plats, animals, and single-celled organisms.
alex41 [277]

Answer: c

Explanation: because it helps by excreting

4 0
3 years ago
Escribe falso o verdadero punto justifica tus respuestas sean falsas o verdaderas la mujer desarrolla mayor cantidad de hormonas
zhannawk [14.2K]

Answer:Explanation:hola me respuesta es d

Si juegas free fire bn garcias por escucharme

Explanation:Explanation:hola me respuesta es d

Si juegas free fire bn garcias por escucharme

5 0
3 years ago
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