4. What role does lymph play in the circulatory system? Please help ASAP

The lymph help to return blood back to circulation after purifying it.

Explanation:

Lymph is a clear white fluid in the lymphatic system which consists of lymph, lymph node, vessels e.t.c.of the circulatory system that contain white blood cells that is lymphocytes which form part of the immune system and this lymph destroy or kill bacteria in the blood or fight against bacteria and it them return the blood back to circulation.

the answer would be knowledge about cars!

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.