This feathered dinosaur is not considered an index fossil because it existed too long ago, and Index fossil are organic remains of animals and plants found in the strata of sedimentary rocks, and serve to date their ages. This is done through the so-called index fossils, so called because they only existed in a certain era or geological period.
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries,
The answer is B Animal cells do not have a cell wall and the shoe box represents the cell wall. Hope this helped!
Answer:
nope
Explanation:
only on here for points sorry
Does this help?https://spaceplace.nasa.gov/how-many-moons/en/
