explain how to how it is possible to have thousands of different proteins when there are only 20 different animal acid

A farmer sprays insecticide on his crops to kill unwanteed insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed.

Define the term asexual reproduction?

Which of the following correctly orders part of a fish respiratory system from the least complex to most complex A. cells - gills - tissues B. cells - tissues - gills c. gills - tissues - cells D. tissues - gills - cells-

How could the speed and direction of motion of an object be changed? A) By increasing an object's inertia B) By decreasing an object's inertia C) By unbalanced forces acting on the object D) By balanced forces acting on the object

Turner syndrome (XO) results from A. Primary Non-disjunction B. Haploid gametes from both parents C. Secondary Non-disjunction D. Either A or C E. All of the Above

In prophase I of meiosis, crossing over results in

Why is salt so precious in the rain forest?

A human activity that could significantly decrease the amount of carbon dioxide in the air is (1) increasing the use of fossil fuel (2) controlling insect pests that eat stored grain (3) burning garbage and trash to generate electricity (4)

What are somatic cells

What type of bacteria causes environmental change