Distribution
1. The specific location or arrangement of continuing or successive objects or events in space or time.
2. The extent of a ramifying structure such as an artery or nerve and its branches.
3. The geographical range of an organism or disease.
4. Probability.
Origin: L. Distributio
This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly genetic variations, natural selection, genetic drift, genetic migration, and speciation...
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons and the zooplanktons. Learn the differences between the two in this tutorial...
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell exterior. Although animal cells lack these cell structures, both of them have nucleus, mitochondria, endoplasmic reticulum, etc. Read this tutorial to learn plant cell structures and their roles in plants...
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of vascular tissue, the leaves of ferns and their relatives are better organized than the mosses and liverworts. ..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new plant. Two major plant divisions are covered: the angiosperms and the gymnosperms. ..
