What occurs during the Winter and Summer that makes the day or night longer? What causes this to occur?

Biology

1 answer:

Vinvika [58]3 years ago

8 0

Answer:

the sun's rays hit the Earth at a shallow angle because the sun is lower in the sky.The long nights and short days prevent the Earth from warming up.

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Suppose that as the result of extensive pollution to the ocean, kelp forests are killed. Explain how this would affect not only

andriy [413]

Kelp populations would be entirely depleted and it would impact the sea life that thrive off of kelp as their homes and source of food. Many sea creatures use kelp as a sort of barrier to prevent bigger fish from attacking them.

4 0

3 years ago

What moon phase has light on the left and the lit portion is less than half?

creativ13 [48]

The answer would be Waning Crescent :)

5 0

2 years ago

Common ancestors only exist within a single species.

puteri [66]

Answer:

It is not true to say that common ancestors occurs only within a single species rather two species with similar traits might have a common ancestor. 

Explanation:

If the ancestor is same for both the species then it is said that both the species are closely related and share common ancestor with similar evolutionary relationship.

Phylogenetic tree are drawn and studies are done to understand the ancestor of a species. The evolution has occurred from the ancestor to the new species formed.

6 0

3 years ago

Is the Sun a planet? Why or why not? (3-4 sentences)

Molodets [167]

Answer:

Explanation:

The Sun is a star there are lots of stars,but the Sun is the closest one to Earth.It made from gases and it always burning

Planets are:Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus

4 0

2 years ago

The stimulation of an inadequate number of sodium channels for the generation of a positive sodium channel feedback loop is cons

diamong [38]

Answer:

Sub-threshold

Explanation:

If the stimulus is too small to generate the action potential, it is considered as subthreshold stimulus. Subthreshold stimulus causes the opening of small number of sodium channel i.e. not enough to generate action potential because action potential is generated by complete reversal of membrane polarity. Slight depolarization is caused by subthreshold stimulus by the opening of inadequate number of sodium channel but its magnitude is not enough to reach the threshold voltage. Consequently the action potential is not generated.

The response produced by subthreshold stimulus is called as local response or local depolarization because it could not travel further. The minimum stimulus required to generate the action potential is call as threshold stimulus and stimulus greater than threshold stimulus is called as suprathreshold stimulus. It changes the frequency of generated action potential.

8 0

3 years ago