It is known that 40% by mass of compound XY3 is substance X. While XY3 was formed from X and Y, all 24 grams of Y substance were used, and 16 grams increased from X. What is the mass of the initial substance X in grams?
16
24
32
40
64

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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