Plant Phyla Features All plants belong to the?plant kingdom Within the plant kingdom are several?phyla?(singular?phylum) Some plant phyla are small E.g. the Glaucophytes contain only 70 species and...
Examples of Classification Biological classification involves putting organisms into?groups, or?taxa?(singular?taxon) The taxa form a?hierarchy A?hierarchical system?is one in which?larger groups c...
作為院校考察申請學(xué)生水平的重要參考，不同學(xué)校對于IB、AP、A-Level分?jǐn)?shù)有著不同的標(biāo)準(zhǔn)。今天就為大家盤點(diǎn)下全球TOP院校IB、AP、A-Level的詳細(xì)要求。 圖源：pexel.com 麻省理工學(xué)院 優(yōu)勢專業(yè) 建筑、化學(xué)、計(jì)算機(jī)...
隨著申請難度的水漲船高，許多同學(xué)也不僅僅滿足于A Level中數(shù)理化經(jīng)這幾門最火爆的學(xué)科，而把目光轉(zhuǎn)向了含金量更高也更具有挑戰(zhàn)性的進(jìn)階數(shù)學(xué)。為了幫助有備考意愿的同學(xué)們了解進(jìn)階數(shù)學(xué)并科學(xué)高效地備考，本文會對...
Binomial System The?diversity of life?on Earth is vast, and is known as?global biodiversity The extent of global biodiversity is such that scientists can only?estimate?the total number of species p...
Examples of Natural Selection Because evolution by?natural selection?generally happens over?millions of years,?it is difficult to see it taking place, and we often have to rely on evidence from the...
Overproduction of Offspring The?number of offspring, or young, produced in each breeding event?differs between species Some species produce?small numbers?of young, e.g. elephants usually give birth...
Variation Differences?exist between organisms of the same?species These differences are known as?variation Examples of variation include: Coat colour in mammals Body length in fish Flower colour in...
Evidence for Evolution: Fossils Fossils are the?preserved remains?of organisms, or the traces left by organisms, such as footprints, burrows and faeces These remains can be?preserved,?e.g. in?rocks...
