OK, so we’ve been looking at how man-made changes in our environment can affect wildlife.Now I’ll discuss aparticularexample.Let’s take a look at mercury.Mercury’s one of the 120 or so elements that make up all matter, and it has the symbol Hg.It’s a shiny, silverysubstance.Y...
英文释义:to transfer pollen from the male reproductive organ to the female reproductive organ in plants, leading to fertilization. 14. assumption - 假设;假定。英文释义:a belief or statement that is taken for granted or accepted a...
If the amount of daylight starts to get low, the plant knows that ___66___ /fɔːl/ is coming. It may start to store “food” for ___67___ (it) growth. The potato plant, for example, will make t...
elements. Showing how insects see colour and learn colour patterns is important to understand how pollinators (传粉者) may, or may not, create evolutionary ‘pressures’ on the colours and patterns that flowers have evolved (进化). Our findings suggest that flowers don’t need to evolve too ...
d quit his job once he was able to earn enough from farming, but this wasn’t an easy decision to make. This was because costs to grow these vegetables were very high, along with the fact that farmers weren’t a part of the value chain and thus couldn’t decide the price of their...
OneoftheearlyworksisSteelonBone,composedbyKangahimself.HeperformsthepieceusingMiMUmulti-sensorgloves.“Icanputuponefinger,andthat’llproduceaparticularsound,”Kangaexplains.“AndthenIcancontrolthatsoundjustbymovingmywristthroughtheair—Icandothatwithlotsofdifferentgestures.”...
“Itseemsthatit’sonlytraits(特性)thatareinvolvedinplant-pollinatorinteractionthatareevolving,”saidAcoca-Pidolle.Thechangescouldrestricttheplants’abilitytoadapttofutureenvironmentalchangesandhaveimplicationsfor“alloffloralbiodiversity”—potentiallydecreasingfloweringplants’genetic,speciesandecosystemvariation. ...
E. The culprit behind the rash is a chemical in the sap of poison ivy plants called umshiol. Its name comes from the Japanese word "urushi, " meaning lacquer. Urushiol is the same substance that triggers an allergic reaction when people touch poison oak and poison sumac plants. Poison ivy...
For as long as it stands and thrives, the forest is a vast machine, storing energy and many elements essential for life. 1.What does the forest strike mankind as permanent? 2.What has sometimes caused plants to die out of the past? 3.In a “primary succession”,what makes it possible...
C.Losses on one side and gains on the other.D.Diligence can make up for lack of intelligence. C Seagrass meadows(海草床)are wonder plants growing beneath the sea. They feed and shelter sea life and are masterful ...