We can examine the effect of -amylase on starch with a simple experiment that you may have already done. Take a piece of bread or a cracker and chew it. Do not swallow the piece of bread, but allow it to sit in your mouth for a few minutes. What do you notice about the bread? Based on the results, what would you assume are the building blocks of starch? Are the results similar for different types of starchy foods?

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,