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7 0

Lunar phases are basically the different positions of the moon that we see throughout its whole cycle, from new moon to full moon, back to new moon. Eclipses, though are more rare phenomena. These occur when the sun, moon, and earth line up at a specific position.

Asteroids are usually dense bodies, with many different formations on their surface. They are also believed to be the largest source of precious metals on our planet.

Comets are bright clouds of gas surrounding a center nucleus that speed toward the sun and heat up at the same time. They contain dust, ice, carbon dioxide, and other gases. As the comet soars toward the sun, the radiation pushes dust particles back, forming the tail they are known for.

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PSYCHOLOGY

shusha [124]

Evidence from different eyewitness are very small or limited

7 0

4 years ago

Discuss the process of the chloride shift in both the respiratory and the digestive systems.

zhannawk [14.2K]

Carbon dioxide is generated in tissues as a byproduct of normal metabolism. It dissolves in blood plasma to form carbonic acid (H2CO3); red blood cell (RBC) carbonic anhydrase catalyzes this reaction. Carbonic acid then spontaneously dissociates to form bicarbonate (HCO3−) and a hydrogen ion (H+). In response to the decrease in intracellular pCO2, more CO2 passively diffuses into the cell.

Cell membranes are generally impermeable to charged ions (i.e. H+, HCO3− ) but RBCs are able to exchange bicarbonate for chloride using the anion exchanger protein Band 3. Thus, the rise in intracellular bicarbonate leads to bicarbonate export and chloride intake. The term "chloride shift" refers to this exchange. Consequently, chloride concentration is lower in systemic venous blood than in systemic arterial blood: high venous pCO2 leads to bicarbonate production in RBCs, which then leaves the RBC in exchange for chloride coming in.[2]

3 0

3 years ago

Why were the firstcells probaly anerorcbic?

Gemiola [76]

The reason scientists believe this is that there was basically no oxygen in the atmosphere at this time, which meant that cells needed to be anaerobic to survive, going around the problem of no oxygen in the atmosphere.

Hope this helps.

6 0

3 years ago

Read 2 more answers

Which phrase describes the relative age of a rock?

Marina86 [1]

Answer:

A. Uses the law of superposition to determine which rock is older or younger.

Explanation:

I majored in Biology

3 0

3 years ago

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What makes bread lighter in texture

Lubov Fominskaja [6]

█ Question █

What makes bread lighter in texture?

█ Answer █

When bread is kneaded fully, the texture of the bread is lighter and fluffier.

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia

8 0

4 years ago