1. Given an atom with the Mass number of 40 and 22 neutrons, how many protons there are in the nucleus of this atom? How about electrons? How many electrons on the last shell? How many electrons, if any, does it need to comply with the octet rule? 2. What is the pH of a pure WATER solution if the concentration of H+ in water is 10-7 ?

3. Let’s assume you add acid to a solution containing a buffer. What is the buffer going to do (release or bind protons)? Hint: think about the definition of an acid & a buffer.

not sure if this what   you'r looking for would be percent composition

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

satellites are frequently used to make observations of the orbit on earth

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.