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olasank [31]
4 years ago
13

How many years ago did the earth cool enough for solid rocks to form ?

Biology
1 answer:
Anestetic [448]4 years ago
3 0
<span>As soon as the crust became </span>cool enough<span> not to remelt, convection driven plate ... as early as 4.2 billion </span>years ago<span>, only 400 million years after the </span>Earth<span> formed.</span>
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Why can’t you identify archaeans by using Gram stain?
Slav-nsk [51]
Because Prokaryotes can be classified based on their shape and their Gram stain reaction. However, the Gram stain is not a reliable method of identifying archaea, as they do not contain peptidoglycan in their cell walls.
4 0
3 years ago
Which of the following is not a physical property of iron?
Burka [1]

Answer:,

Explanation:,

4 0
3 years ago
The Venn diagram compares aerobic respiration and anaerobic respiration.
pashok25 [27]

Answer:

has commercial uses

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4 0
3 years ago
Explain how microscopic and macroscopic anchoring of muscle filaments enables you to bend your elbow.
mixer [17]

The development and dissolution of cross-bridges connecting myosin head binding actin ratchet the thin and the thick filaments past one another in response to nervous system motor output. The muscle fibers get shorter as a result of this sliding movement since the filaments are anchored.

<h3>Briefing:</h3>

Muscle contractions attached to a hard endoskeleton are necessary for human body movements. Tendons connect muscles to bones, which are made of fibers that are built up from the sarcomere, a basic structural component. Within the sarcomere, the thin and the thick filaments have different places of attachment. Myosin head and actin cross-bridges develop and break in response to nervous system motor output, ratcheting the thin and the thick filaments past one another. This sliding motion shortens individual muscle fibers because filaments are attached..

Additionally, muscular contraction causes the boy's bones to shift in relation to one another as the fibers themselves are a component of the muscles and are related to bones at either end. Thus, muscle function—such as the bending of either an elbow by contracting the biceps—is made possible by the structural anchoring between muscles and filaments.

To know more muscle filaments visit:

brainly.com/question/19091001

#SPJ4

7 0
1 year ago
solve the inequality. x /8 is greater than 4. a. x is greater than 1 /2. b. x &gt; –4 c. x &gt; 2 d. x &gt; 32
MA_775_DIABLO [31]
To get x on its own, you times the 8 over so the 8 cancels each other out on the LHS. 

~ x > 32

(D)
5 0
4 years ago
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