There are no options for this question
Animals can be classified into two main groups: vertebrates and invertebrates. The main difference between vertebrates and invertebrates is that invertebrates, like insects and flatworms, do not have a backbone or a spinal column. Examples of vertebrates include humans, birds, and snakes.
Answer:
2 sec
Explanation
travel speed is = 10 m/sec
so for 20 meter = 20/10 = 2 sec
Answer:
The plants would not grow so they have no food
Explanation:
Its cold
Unlike a bar magnet<span>, however, </span>Earth's magnetic field<span> changes over time because it is generated by a geodynamo (in </span>Earth's<span> case, the motion of molten iron alloys in its outer core).</span>
