The appearance of fossils would the the answer.
Although there has been some scientific debate about what fossil strata should mark the beginning of this period, the "International Geological Congress" determined that the Cambrian period was approximately 543 million years ago of which the first appearance in the fossil record of worms that made horizontal burrows was discovered.
Answer:
<em><u>Osmosis
</u></em>
<em><u>For a cell in a hyper tonic solution, which way does the water move? Osmosis causes water to move OUT OF the cell.</u></em>
Explanation:
Well a small baby whale can eat about 200 pounds in a day
An adult whale can eat roughly about 6 TONS of food per day-
Answer:
many alveoli are present in the lungs with a shape that further increases surface area. Thin walls - alveolar walls are one cell thick providing gases with a short diffusion distance. Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface.
Explanation:
Answer:
C
Explanation:
Aggressive behaviour is a act of violence not without it
