Answer:
1 The computer scientists check the database for viruses
2 Nanotechnology is difficult to understand
3 The geologists study the structure and formation of the earth.
4 One is concerned with the question of whether cloning is ethica
5 In the past few years genetic researchers have made incredible strides
6 An international research team is planning a trip to Mars
An acid is a substance which contains hydrogen ions which can be replaced by a metal or an ammonium ion to form a salt.
A base is a substance which reacts with an acidto form a salt and water only.
A salt is a substance formed when an acid reacts with a base.
Answer: 4
Explanation:
the explanation is take your hand and hole to fingers up hold the other hand up and put 2 fingers up on that one and it comes out to be 4 fingers.
