The valves are responsible for preventing blood from flowing in the wrong direction, they are present in the veins, and the arteries don't need them because the aorta (biggest artery) pumps or in other words pushes it with such a force that no other force can change its direction, in the veins there is no structure present for pumping them as a result we have got valves so that they go in one direction...... the meaning of the word valve is to allow in one direction
Answer:
The Human Immune system helps fight bacteria and germs and viruses because without the Immune system we could die it is what protects us from The flu and sometimes cov id with a weak immune system we might no survive.
Explanation:
Answer:
All cells except sex cells
Explanation:
Answer:
D. Making gametes technically isnt asexual reproduction because the offspring arent exact copies.
Explanation:
Mitosis is what replaces dead/ dying cells and repair injuries
Answer:
breed a has an average of 9 pounds
breed b has an average of 12.125 or 12 (rounded) pounds
Factors you may describe could be, food sources, environment, and climate could have changes in the characteristics of different breeds.
Having controlled factors, having 2 baby rabbits of the same breeds and monitoring the same food and water, observations and data can be collected, done multiple times data can be complied and used to theorize
