8 Which diagram demonstrates how crossing-over contributes to genetic variety during meiosis?
UU.
А
R
R
RR
Rr
Rr
r
X^X
B
D
COM
Equator of col
My Daughter
molecule
AMIN
Old strands
NW New strands
My Daughter
VUN molecule
Spindle fer
Pole of

looks like the answer is     c     to me!

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.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.