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...
The theory of cosmic evolution states that the universe, having begun in a state of simplicity and___, has___into great variety. Blank(i) equilibrium homogeneity contrast Blank(ii) modulated differentiated accelerated 显示答案 登录后才可以添加做题笔记哦,还没有账号? 马上注册 KMF 解析 网友...
Eimer put forward the doctrine of orthogenesis. This theory states that variations are the results of the effects of the environment on the complex constitution of the living organism, but that this constitution determines the character of these variations; they are not indefinite, but take place ...
nineteenth century, may be a universal sign of anger.As the originator of the theory of evolution, Darwin believed that the universal recognition of facial expressions would have survival value.For example, facial expressions could signal the approach of enemies (or friends) in the absence of ...
century, may be a universal sign of anger. As the originator of the theory of evolution, Darwin believed that the universal recognition of facial expressions would have survival value. For example, facial expressions could signal the approach of enemies (or friends) in the absence of language. ...
"There’s nothing that requires schools to teach evolution. Sometimes teachers in high schools just leave it out. However from the point of view of biologists, evolution is the central theory of biology upon which everything is based," said Weis. "Unfortunately, teaching evolution has become a...
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5.2 Charles Darwin and the Theory of Evolution Charles Darwin's publication of "On the Origin of Species" in 1859 was a game - changer in the history of biology. Darwin proposed the theory of evolution by natural selection, which states that species evolve over time through a process of dif...
The Information Theory of Aging (ITOA) states that the aging process is driven by the progressive loss of youthful epigenetic information, the retrieval of which via epigenetic reprogramming can improve the function of damaged and aged tissues by catalyzing age reversal. This is a preview of ...
34. According to the theory of evolution, all living species are the modified ___ of earlier species. A) descendantsB) dependantsC) defendantsD) developments(A) 35. The panda is an endangered species, which means that it is very likely to become ___ without adequate protection. A)wild...