Hummingbirds use their long, narrow beaks to get nectar and insects from flowers. Scientists studied a group of hummingbirds in an area for a number of years. They collected data on the beak length of the population. Over the years, they noticed that the beaks were getting longer. Explain what could have been happening to the hummingbirds that made this happen. Also explain what could have been going on in the environment that made this happen.

which

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.