20.4 21.3 are the correct answers
option c is the answer
Explanation:
septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks
Answer: To do different kinds of jobs
Explanation:
The correct answer is option B
Sperm cells when pollinated by the insect to the female body part stay there for a while til the part of the flower determines its suitability and once it is done the sperm travels down through the pollen tube.
Answer:
D penguins. an stay warm in cold artic waters
Explanation:
lipids carry extra energy and store it