Question

DO QUESTION NUMBER 10 AND GET 50POINTS

Answer 1

Step-by-step explanation:

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Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic. The organisms, each termed a symbiont, must be of different species.

Answer 2

Answer:

a train travel 360 km at a uniform speed. if the speed had been 5km/h more, it would have taken 1 hour less for the same journey. find the speed of the train

Step-by-step explanation:

Given distance=360 km.

Let the speed of the train be x km/hr.

Speed when increased by 5 km/hr =(x+5) km/hr

360/ x − 360

(x+5) =1

x(x+5)

[360x+1800−360x]

=1. 2/1

+5x−1800=0

2x

+45x−40x−1800=0

x(x+45)−40(x+45)=0

(x−40)(x+45)=0

x=40,−45

The speed of the train is 40 km/hr.