Personhood can be a very difficult thing to define. Learn about personhood in this article from HowStuffWorks.
It wasn’t until the Earth itself was nearly four billion years old that the advent of large plants and animals finally occurred. Complexity exploded around that time, as the combination of multicellularity, sexual reproduction, and other genetic advances brought about the Cambrian explosion. Many ...
plants can communicate with each other using a system that resembles a primitive form of an animal’s nervous system. This is because plants and animals come from a common ancestor. Second, the most basic definition for “plant” is a living...
Many people are under the illusion that before the meddling of humans, the populations of different types of plants and animals tended to be pretty much constant. This isn’t really the way things work, however, in a finite world. Instead, the populations of many species cycle up and ...
The hippopotamus is a large grey animal with a big head and mouth. It___about four tons, or 4,000 kilograms. Its stomach (胃) is seven meters long, and it eats only plants. It is a mammal, but it___a lot of time in the water. During the__...
This pattern suggests that before the emergence of the type II splice form in human, the weakening of the type I splicing site already existed in the common ancestor of humans and chimpanzees, implying a multi-step process that led to the dramatic change of splicing pattern in humans, the ...
The mattress was discovered at the bottom of a series of layers of grasses and leafy plants which the archaeologists also interpreted as bedding, with evidence of periodic burning, probably for hygiene. The youngest layer was 38,000 years old, suggesting that this corner of the cave was used...
In the domain of biology the ontology is particularly richly structured (e.g, Berlin, 1992); with development, understanding of relations among biological kinds becomes increasingly complex and multifaceted. For example, children become increasingly aware of plants' status as living things (Richards &...
It may have started as a way to escape from predators, but the landscape our ancestors discovered was already rich with plants such as mosses, horsetails and ferns, as well as arthropods (millipedes) which had colonised land millions of years earlier. We are not alone Walking independently ...
The classification of organisms on the basis of physical and genetic attributes is known as taxonomy. The organisms are classified into plants, animals, and microorganisms. However, some organisms with diverse characters are placed in the same group, while some organisms have simi...