PLEASE HELP!!!!!! Answer both of them please!

Biology

1 answer:

Lostsunrise [7]3 years ago

7 0

Answer:

Hi,

For the first question they can make a huge change in temperature , humidity in certain areas or regions. The can also alter the wind and rate of evaporation .

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The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa an

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Answer:

Division of these two groups occurred after the protostome developmental sequence appeared

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The fixed pattern of changes in membrane potential during an action potential is coordinated by the sequential opening and closi

baherus [9]

<h2>Na-K channels</h2>

Explanation:

Brief sequential change in the membrane potential of excitable cells after stimulus is called action potential whereas membrane potential represent charge difference across the membrane
In a typical neuron cell, membrane potential of cytoplasm is negative at rest and hence called resting membrane potential
Resting membrane potential of excitable cells is established by Na+ K+ pump and maintained by K+ leaky channels at rest
Phases of action potential includes: depolarization, repolarization, hyperpolarization and resting membrane potential
Depolarization starts when a threshold stimulus is applied on a neuron when via Na+ mechanically operated channels that trigger action potential
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Hyperpolarization occurs due to excessive efflux of K+ by voltage gated K+ channels
Additional efflux of K+ occurs due to slow inactivation of voltage gated K+ channel

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3 years ago

To be considered a source of water pollution, the source must include a chemical. true or false?

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The given statement is False.

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Biological substances such as harmful microorganisms or physical substances such as plastic, garbage and other substances present in water can also be considered as the water pollution.

The chemicals, and other substances are considered as the source of water pollution.

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In genetic drift, the allele frequencies in a gene pool change because of :

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The correct answer is B) chance

Allele frequencies in a gene pool change completely due to chance.

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The cells multiply I think that’s it

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