Arachnids are spiders,
spiders have 8 legs,
a pair is 2,
so, arachnids have 4 pairs of legs.
Answer: ''Dust from the hot Saharan Desert of northern Africa has a connection to a much different climate in South America, according to a study by NASA scientists. Using satellite data, the study has found that the dust is acting as fertilizer for South America's Amazon rainforest about 1,600 miles away to the west over the Atlantic Ocean.''
Explanation:
Answer:
A .a net force greater than zero
B. Unbalanced Force
Explanation:
A .When the resultant force on an object is zero, it will remain at rest if it is at rest, or continue to move in a straight line at a constant velocity if it is in motion. So , the answer will be a net force greater than zero .
B . An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion. A net force = unbalanced force. So , the answer will be unbalanced forces .
We have that "J.J. Thomson proposes a new model of the atom" statement refers to the Plum Pudding model by the scientist J.J. Thomson.
From the question we are told
Thomson proposes a new model of the atom?
Generally
- J.J. Thomson was a scientist that dedicated his lives work to studding atoms and its particles
- J.J. Thomson is most famous for his evolutionary work with the cathode ray tube
- The Cathode ray tube gave rise to the discovery of the electrons at that time was called little negatively charged particles within the atom
- This caused J J Thompson to propose a law which stated that atoms where particles which were made up of negative charge around Positive charges
- This was called Plum Pudding
Therefore
"J.J. Thomson proposes a new model of the atom" statement refers to the
Plum Pudding model by the scientist J.J. Thomson.
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