Answer: The cell is the structural and functional unit of all living organisms, and is sometimes called <u>the "building block of life."</u> Some organisms, such as bacteria, are unicellular, consisting of a single cell.
Answer:
Controls blood flow to regulate body temp.
Explanation:
Circulatory system deals with flow/transport of blood
TRUE. A true-breeding organism, sometimes also called a purebred, is an organism that always passes down certain phenotypic traits to its offspring.
Lion, Tigger to an eating meat food
beast mean meat food
Answer:
Astronomers can use telescopes to look at very distant galaxies. This is how they see what the Universe looked like a long time ago. This is because the light from distant parts of the Universe takes a very long time to reach us. From these observations, it seems the physical laws and constants of the Universe have not changed.
Physicists are currently unsure if anything existed before the Big Bang. They are also unsure whether the size of the Universe is infinite.