Which statement is correct The control group is manipulated by the scientist and the dependent variable is what is manipulated.

The constant is always kept the same and the dependent variable is what the scientist changing.

The dependent variable is what is changed by the scientist and the independent variable is what is measured.

The independent variable is what the scientist is changing and the dependent is what the scientist measures.

is this for the e2020 class

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.