Answer: B, C and, D
It allows nutrients to enter the cell.
It provides a barrier against disease-causing agents.
It enables cells to interact with their environment.
slow heart rhythm (bradycardia)
Explanation:
when a persons heart beat is not normal is typically let's say 60-100 beats per minute that means the blood is not pumped properly throughout the body. so the pacemaker works as an heart machine to keep your heart beating.
Answer:
Do you mean planets?
if so,The heavy rocky particles within the inner part of the disk formed planetesimals and eventually, inner planets. In our solar system, the four innermost planets Mercury, Venus, Earth and Mars are known as inner planets. They lie inside the asteroid belt. They have volcanoes and valleys and are very hot compared to outer planets.Inner planets are much smaller than the outer planets, and are rocky with an iron core.
Hope that helps!
If a species wanted to remain small in order to camouflage better!
<span>E)detritus-insect-frog-snake would best represent the food chain.
Detritus is a residual from plants that are decomposed. This will be eaten by insects such as flies.
After that, the flies will be eaten by the frogs who hunted on ponds before they eventually eaten by the highest level carnivore (such as snakes or Big birds)</span>
