The size of our brains has increased since we became tools users.
While the technology improved, our brains also evolved to take in all that new knowledge. New information is needed to be saved so our brain had to increase in size to hold all that.
This is the piece of evidence that contradicts susan's argument because humans had small brains and evolved to have larger brains, while the techology is also changing.
Explanation:
it is a major component of plant cells, and is the medium in which growth processes occur. Without adequate water, biological processes, such as photosynthesis, are greatly reduced. Reduced photosynthesis means reduced plant growth, including not growth.
Answer:
I believe this is referring to Cellular respiration.
Explanation:
Answer:
Acquired immunity is immunity you develop over your lifetime. It can come from: a vaccine. exposure to an infection or disease. another person's antibodies (infection-fighting immune cells
Answer:
The K-T boundary in Zumaia, Spain is sharp--representing an abrupt change in the marine ecosystem.
The K-T boundary separates rock layers of the Cretaceous period from those of the Tertiary period.
The K-T boundary dates to 65 million years ago (when the dinosaurs disappeared)
Explanation:
The Cretaceous-Tertiary (K-T) extinction is the period between the mass extinction of plants and animals about 66million years ago. Based on geological records the interval between the Cretaceous period and the present day Tertiary period is marked by a boundary is called K-T boundary.Based on carbon dating this has been estimated to be 65.5 million years ago.
Evidences has shown that, this boundary must been created by asteroid -Chicxulub Crater and its impacts must have killed all green plants due to the clouds it produced which blocked sunlight penetrations. This decimated the dinosaur population due to lack of photosynthesis.