Answer:
b. Red blood cells that lack nuclei
d. A fully erect posture associated with bipedalism
Explanation:
Eccrine glands can be found on horses, you may have seen horses sweeting. The pressure sensors can be found in other apes too. Fully erect posture is a characteristic of humans, other apes or monkeys may walk sometime like this, but their main locomotion is in 4 extremities. Non nucleated is a characteristic that gives an advantage because more oxygen can be carried inside red blood cells making respiration more efficient.
It makes up a polysaccharide I believe. I’m sorry I’m not much help
Explanation:
The speed of sound depends on the elasticity and density of the medium through which it is traveling. In general, sound travels faster in liquids than in gases and faster in solids than in liquids. The greater the elasticity and the lower the density, the faster sound travels in a medium.
