B, 30% billion, because there are 8 billion people on earth and that answer makes the most logical sense
What materials? There are none provided.
Answer:
True
Explanation:
Glomerular filtrate or nephric filtrate is a fluid which filters through the glomerulus of the nephron. Glomerular filtrate is same as blood plasma without the proteins. Since glomerular filtrate contains glucose, amino acids, and various salts which are not the part of the urine, are need to be reabsorbed into the bloodstream through the tubules of the nephron. Reabsorption of glucose 100%, amino acid 100% and sodium 70% take place in the proximal convoluted tubule.
Reproduction:
Plants- They can reproduce both sexually and asexually, and can reproduce with only 1 parent.
Animals- They can reproduce sexually, and must have a male and a female of (around) the same species.
Cell Structure:
Plants- They have elongated cells with cell walls
Animals- They have more circular cells with no cell walls
Answer:
Our body cells require oxygen to release energy.
Explanation:
The oxygen that we take in during respiration is used to break down the food we eat to release energy from it. When we breathe in oxygen, it diffuses into blood from the lung, where it is transported by red blood cells to the entire body to be used to produce energy.