The left ventricle must contract with more force in order to send blood to the body's extremities
I hope this helps! I'm happy to answer any other questions you might have :)
I think that the answer is 12 billion. So sorry if I am not right.
Answer:
In uranium-lead dating, for instance, the radioactive decay of uranium into lead proceeds at a reliable rate. Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old.
And that's how after rounding we know that earth is 4.5 years old.
Seaweed is a type of algae.
Explanation: Seaweeds are a group of photoautotrophic, multi-cellular algae occurring in marine environments.
Neuroglia<span>, which is sometimes referred to as "</span>glia", are cells that are not neurons but merely support and provide protection for neurons. They are called 'non-neuronal cells' and they exist<span> in the </span>central nervous system<span> (</span>brain<span> and </span>spinal cord<span>) and the </span>peripheral nervous system (nerves outside the brain and the spinal chord).
