In evolution, what drives the change in species over time? A. Random mutations. B. Human intervention. C. Environmental stability. D. Fixed genetic traits. 相关知识点: 试题来源: 解析 A。解析:在进化中,随机突变是推动物种随时间变化的主要因素。随机突变可以产生新的性状,在自然选择的作用下,有利...
In the process of evolution, what mainly drives the change of species? A. Human activities. B. Random mutations. C. Environmental changes. D. Scientific E. xperiments. 相关知识点: 试题来源: 解析 C。在进化过程中,环境变化主要驱动着物种的改变。环境的改变会对生物产生选择压力,使得那些适应环境的...
The will of the organisms themselves D. A sudden change in the E. arth's climate 相关知识点: 试题来源: 解析 B。解析:选项A人类干扰不是物种变化的主要驱动力,虽然人类活动会对生物有影响,但不是主要的进化驱动力。选项B正确,基因变异和自然选择是物种变化的主要驱动因素,基因变异提供了原材料,自然选择...
sconflictwithherson?A.Toleadintheuseofperiodintexting.B.Toemphasizethegreatpowerofwords.C.Toshowyoungsters?attitudestowardstexting.D.Tosuggesttherightuseofpunctuationmarks.( )6.WhyisJuanAbenanteRinconmentionedinthetext?A.Tomakeassessmentsontherecentstudy.B.Toconfirmthefindingsoftherecentstudy.C.Toputforwa...
A. change B. fit C. adjust D. modify 相关知识点: 试题来源: 解析 C。本题考查“adapt”的含义。“adapt”表示适应,C 选项“adjust”也有调整以适应的意思。A 选项“change”是改变;B 选项“fit”是适合,但不如“adjust”更能体现适应的过程;D 选项“modify”是修改。反馈 收藏 ...
Biological evolution is the process by which species change over time. What is the main mechanism of evolution? A. natural selection B. genetic mutation C. laboratory experiments D. human intervention 相关知识点: 试题来源: 解析 A。生物进化是物种随时间变化的过程,自然选择是进化的主要机制。选项 ...
needtotakeplaceintherealworld.Withtheevolutionofvirtualreality(VR)technology,tourism willincreasinglybecomeacombinationofphysical andvirtualworld.VR mayevenremovetheneed totravelentirely. ButcanaVRexperiencereallyequalareal world? Manyexpertsbelieveitcan.Studieshave shownthatourbrainshaveaninbuilt VR-like mechanism...
Further, several ecological attribute and hypothesis (enemy release, novel weapon, empty niche, evolution of increased competitive ability etc.) were proposed pertaining to success of invasive plant species. However, single theory will not be able to account for invasion success among all environments...
Hope and love are popular themes of literature and art in many human societies. The human physiology of love and hope is less well understood. This review presents evidence that the lack of love and/or hope delays growth disturbs development and maturati
B.They led to research into the future of fish.C.They made it clear when the Silurian Period began.D.They provided more evidence for human evolution.答案(1)推理判断题。根据第一段Humans evolved (进化) from apes.This is what we learned in biology class.But what came...