my mum hates crusts. Mum cuts off the crust of her 10 * 10cm piece of toast every day. She cuts 1 cm from each edge and throws these pieces away. what percentage of the toast is thrown away?

36% of the toast

Step-by-step explanation:

If you have a piece of toast that is 10 by 10 cm long, then it's area is 100 cm².

If you cut 1 cm  off from each edge, then each edge loses 2 cm (for each end). This makes the side lengths 8 cm long, and that makes the area 64 cm².

In total, we lost cm² of toast (quite a bit).

This means we lost 36% of the toast, since = 36%.

Please let me know of any mistakes, I'm only 80% sure on this one.

Hope this helped!

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !