Answer:
Millions of years ago, the Appalachians were taller than the Himalayas! Millions of years of erosion, however, have taken their toll. ... The crust that is now the Appalachians began folding over 300 million years ago, when the North American and African continental plates collided.
It keeps the temperature on Earth - moderate
Earth would overheat if the sea wasn't able to retain large amounts of heat
Semen is the thick fluid that contains the sperm that is basic in nature, thus protecting it from the acidic nature of the vagina.
Answer:
Index fossils represents the fossils of the organisms that lived in a particular geological time zone. The index fossils defines a geological time of a dead organisms. Index fossil ensures that a correct order of geological time appears in a fossil record. The index fossils of organisms that lived for a short period, were abundant and widespread geographically.
Synapsis, also called syndesis is the process
of pairing between homologous chromosomes during meiosis. The exchange portions
of their chromatids enables pairing of homologous chromosomes prior to their
segregation and chromosomal crossover. This takes place during prophase I of
meiosis and this process is perilous for accurate segregation of the
chromosomes.
