Pollen grains scientists a identify plants and make assumptions on past climate conditions. b understand tree growth and make assumptions on past climate conditions. c understand how earth was shaped and make assumptions on past climate conditions. d identify major ice ages and make assumptions on past climate conditions.

The answers A(: just took the quiz

Pollen grains help scientists  -

The correct answer is option A.

A: Identify plants and make assumptions on past climate conditions.

Pollen grains are helpful for new plants and flower formation. These travel in air or through birds and animals and this helps in plantation. Scientists can identify the plant species through these grains.

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.