Answer:
copper sulfur
Explanation:
copper sulfur gold iron Aluminum
Neck: pivot joint
shoulder & hip: ball and socket
elbow & knee & ankle: hinge
wrist: elliposoid
Answer:
Option A is correct
Explanation:
Any thing which is not a hypothesis is already proven or is believed to be true.
There is no case of "If" and "Then" condition.
Here in this case the knowledge of essential requirements for producing a good crop of sunflower is not a new thing. It is something which is known since a long time and also being practiced in different parts of the world efficiently.
Hence, the statement "Sunflowers require soil and plenty of sunlight and water to grow and thrive." is not a hypothesis.
Option A
Answer:
gravity
Solar system formed about 4.6 billion year ago, when gravity pulled together low-density cloud of interstellar gas and dust (called a nebula)(movie). The Orion Nebula, an interstellar cloud in which star systems and possibly planets are forming.
Explanation:
The possible sources of early organic molecules would be inorganic molecules forming into more complex organic ones using energy from lightning.
<h3>Formation of first organic molecules</h3>
The first organic molecules are hypothesized to have been formed from simple inorganic molecules such as water vapor, methane, and ammonia.
Their dissolution to form the 'chemical soup' is said to have led to their formation with reactions within the chemical soup driven largely by lightning and UV rays.
More on the first organic molecules can be found here: brainly.com/question/27752124
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