Answer:
Both cones and rods participate in dark adaptation, slowly increasing their sensitivity to light in a dim environment. Cones adapt faster, so the first few minutes of adaptation reflect cone-mediated vision.
Answer:
The xylem is located in the root, stem and the leaves of a plant.
The xylem contains dead cells arranged end-to-end forming continuous vessels. They have a hollow central space (lumen) through which water passes. They walls contain lignin.
The xylem carries water and minerals, up from the roots to the rest of the plant.
Answer - B
Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
Answer:
D. Opposite
Explanation:
The rocket engines lift a rocket from the earth because hot gases with high velocity .react against rocket and push it up.
The Persian state and Western India to the Indus River was created by Cyrus "the great". He proved wisdom and compassion in the defeat and organization of his empire. His son Cambyses, invaded Egypt. Darius added a new province and Western India then dominated Thrace in Europe, He created the world's largest empire to that time, he divided the empire into 20 provinces. The fall began by Persian kings being secluded out there courts, enclosed by luxuries. Kings upturn taxes, loyalty to empire decline.
