The six types of synovial joints are the pivot, hinge, saddle<span>, plane, </span>condyloid<span>, and ball-and-socket joints</span>
The geologic time scale is referred to as the system of chronological dating which is related to geological strata to time. It is used by palaeontologists, geologists and earth scientists to describe the relationship of events and timing that occurs during Earth’s history. The primary division of time is defined as eons. Eons follow a sequence of the Archean, the Hadean and the Proterozoic which are referred as Precambrian superon.
Eons are divided into an era whereby those eras are subdivided into periods, ages, and epochs. Eon, epoch, period and ages correspond with eonothem, series, systems and stage which are mostly used to refer to layers of rock which then stretches to geologic time in the history of the earth.
The process of fertilization occurs in both plants and animals. There are, of course, differences in the details and mechanisms. On the other hand, some of the similarities are striking. For example, the moss plant has both swimming sperm cells and eggs. In the moss plant, fertilization occurs by the sperm swimming to the egg. Vertebrate animals also carry out reproduction by way of sperm and egg.
One of the differences between plants and animals in this regard is that plants are, for the most part, sedentary. The moss plant depends on rain or very wet conditions in order for the sperm to swim from the male parts of the plant to the egg in the female parts. In the case of animals, the male and female are mobile individuals that physically interact with one another in the process of mating.
Answer: C. Stream elevation
Stream velocity is the speed of water in a stream. It can be measured in meters per second or feet per second. Stream velocity is highest in the mid stream and lowest along the bottom of the stream. Stream discharge depicts the flow of water from it's source of origin. Stream gradient indicates difference in pressure levels between different water layers. Channel size is the width of water surface acquired by the water body. Stream elevation is the rise in the superficial layer of water. Stream discharge, stream gradient and channel size all influence the stream velocity as they are related to the flow of water. Stream elevation does not influence flow of water hence, does not influence stream velocity.
