What is true for△DEF, if ∠F is a right angle? A
sinD=cosD because the ratio is the same for each angle in any right triangle.

B
sinD=cosE because the opposite leg for ∠D is the same as the adjacent leg for ∠E.

C
sinD=cosE because the adjacent leg for ∠D is the same as the opposite leg for ∠E.

D
sinD=cosD because the opposite leg and the adjacent leg are the same length in the triangle.

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 !

the answer is  

a.

4,624π mm2

step-by-step explanation:

hi do you need an answer for your question?

step-by-step explanation: