The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears
Answer:
A limiting factor is anything that constrains a population's size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources.
Explanation:
The answer should be an unconformity
A plant grew from a leaf cutting will reproduce asexually.A plant cutting refers to a piece of plant that is used to vegetatively propagate a plant. A plant cutting can be a piece of stem, root or leave. The plant cutting is usually placed inside a suitable medium, where the cutting will grow to produce a new plant under suitable conditions. Plants that are grown from plant cutting are considered to be reproduce asexually, because vegetative propagation is a form of asexual reproduction.