Answer:
1) Henle's long loop, so that water can be reabsorbed largely.
2) Small glomeruli for an ultrafiltration rate reduction.
Step-by-step explanation:
"Desert rodents in Western North America are kangaroo rats.
You subsist on highly carbohydrate seeds and receive all the water from the food you require.
Two structural changes in the kidneys of desert animals like kangaroo rats have been made: their kidneys are formed according to their survival needs.
• Henle's long loops assist reabsorb water and salt chloride in the urine so that waste can be excreted without losing much water.
• Small glomeruli for an ultrafiltration rate reduction.