I had this question when I took a biology class cuz I chose to study a lot on paleontology :)
It’s that there’s fossils of animals in geological strata that are older than the Cambrian explosion.
Some fossils from the ediacaran period have been discovered in layers aged to the Cambrian
Answer: It is no longer circulated throughout the body supplying oxygenated blood. The un-oxygenated blood turns blue which makes the body look “dusky”. Since it is no longer circulating, the blood pools in the lowest part of the body making these areas looked dark or bruised. (If the person was laying on their back, the blood would pool on the backside of the body)
Explanation:
When a person dies, the heart stops circulating blood and the lungs stop oxygenating the recirculated blood. The blood turns blue and pools in lowest place.
Answer:
Plant cells have cell walls and animal cells have a cell membrane.
Explanation:
While plant cells also have cell membranes, they're the only one with both a cell membrane <em>and </em>wall.
Answer:
Yes
Explanation:
This is because enzymes require an optimum tempareture in which they operate above which they get denartured and below which they become inactive.
C. <span>smooth endoplasmic reticulum I am positive that this is the correct answer. </span>
