Answer:
Bullock cart
Explanation:
Bullock cart is an ancient means of transport which is still used in many places of world. Bullock cart is a two wheeled or four wheeled vehicle that is pulled by oxen.
Oxen are also used for ploughing. they carry plough in their back and the person directs the plough in the right direction.
Hence, the correct answer is "Bullock cart".
Answer:
Explanation:
Although protons resemble other positive ions such as Na+ and K+ in their movement across membranes, in some respects they are unique. Hydrogen atoms are by far the most abundant type of atom in living organisms; they are plentiful not only in all carbon-containing biological molecules, but also in the water molecules that surround them. The protons in water are highly mobile, flickering through the hydrogen-bonded network of water molecules by rapidly dissociating from one water molecule to associate with its neighbor, Protons are thought to move across a protein pump embedded in a lipid bilayer in a similar way: they transfer from one amino acid side chain to another, following a special channel through the protein.
<h3>Answer:</h3><h2>A Reaction is the rate rate which increases with a decrease in temperature.</h2>
It can be physical or chemical; a physical reaction is the one which occurs as a result to an event i.e. anger, happiness, excitement etc. Where as a chemical reaction is illustrates the process a chemical behaves when mixed with another substance.
