Triangular sail developed by Arab or Indian merchants which was eventually adopted by European ship owners to improve the maneuverability of their ships. It could catch crosswinds and be used to drive a ship along its chosen course. The captains of caravels and galleons used this type of sail in conjunction with several other kinds of sails to cross the Atlantic and Pacific Oceans.
Answer:
One of the properties of transition elements is forming coloured compunds.
Answer:
they fought in the war gained the right to vote for fighting in ww1 and from ww2 they gained respect especially the fighter pilots
Explanation:
<span>the belief in or worship of more than one god.</span>
Answer:
75%
Explanation:
In order to understand this question you need to understand the matching law first. The matching law provides the density of reinforcement or the rate of reinforcement if more than one response is available simultaneously to the individual. Here, two responses are available which are left key, 60 reinforcers per hour, and right key, 20 reinforcers per hour. This provides the ratio between the two reinforcers which is 60:20 or 3:1 in favor of left key. Here, one has to make a prediction only for left key and based on 3:1 ratio it can be said that 75% of pigeon will make their responses on the left key.
