The answer is;
The rift valley formed when the crust pulled apart.
The rift valley formed at a divergent boundary.
Divergent boundaries occur when two adjacent convection currents in the mantle are spinning in opposite directions. This causes the upper crust to stretch creating tension due to drag in different directions on the local region. The tension causes the crust to crack severally and the middle crust block dropping in comparison to flanking regions.
False like blood lymph won't flow both to and from the heart
well, i think the first one is false because plants dont produce sexually
the second one is false
third- please fact check me ut i think its true
forth is true
true
true
true
true
true
please fact check me i grow plants but im not a scientist lol
The answer to this question is the term parasitism. A parasitism is a non-mutual relationshio between species where in the other specie benefit from the other. The specie that benefit is called a parasite while the specie that was being used by the parasite is called the host.