Answer:
Dude if you use a punnent square it's really easy. But the answer is 0%
Protons are positively charged particles
Neutrons are neutralized charged particles
Electrons and negatively charged particles
Protons and neutrons are In an atoms nucleus while the electrons are floating in the electron cloud around the atoms nucleus
If the food type changes in a given environment, then the amount of each type of bird beak will change as birds with beaks more suited to the available food will consume more successfully over time. <span>The independent variable of the lab is the type of food that is available to the birds. The dependent variable of the lab is the frequency of each type-size and shape-of beaks. The conclusion will state that favourable traits place one species in a more optimal position to survive in a given envronment.</span>
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.