Answer:
Explanation:
An element only has <u>one</u> type of atom and cannot be broken down by chemical means.
Let's analyze the answer choices.
1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.
2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.
3. This has one type of atoms, so it is an element.
Therefore the best answer choice is 3.
Answer:
2,787
Explanation:
Currently there are over 2,787 active artificial satellites orbiting the Earth.
Answer:
Biennial
Explanation:
Biennial are those crops which takes two years to complete its life cycle i. e. vegetative stage and reproductive stage. First stage is the vegetative stage in which vegetative parts such as roots, stems, leaves and branches are formed. Second stage is reproductive stage in which flowers formed first and after that seeds are produced due to fertilization. Seeds are the babies of plants.
8368 is because 8358+10 is 8368
