A naturalist, thought that species gradually improved over generations because of an inherent drive toward perfection, up the chain of being
Selection is the differential survival and reproduction of individuals of a population based on differences in shared, heritable traits
Body structures that are similar in different lineages because they evolved in a common ancestor are called __________ structures
An evolutionary pattern in which similar body parts evolve separately in different lineages is called a morphological ___________
An evolutionary patter in which a body part of an ancestry changes differently in its different descendants is called a __________ divergence
An early naturalist, known for describing nature as a continuum of organization
Similar body structures that evolved separately in different lineages are called ____________ structures
Physical evidence, remains or traces, of an organism that lived in the ancient past
He proposed the theory of uniformity, the idea that gradual, repetitive change had shaped Earth
A change in a line of decent
He found many unusual fossils, and saw diverse species living in environments that ranged from the sandy shores of remote islands to plains high in the Andes during his voyage on the Beagle
An expert in zoology and paleontology, proposed an idea: many species that had once existed were now extinct
Radiometric __________ is a method of estimating the age of a rock or a fossil by measuring the content and proportions of radioisotope and its daughter elements
He studied wildlife in the Amazon basin and the Malay Archipelago. He also outlined evolution by natural selection
Down
He correlated increases in the size of human populations with episodes of famine, disease, and war
The study of patterns in the geographic distribution of species and communities
Comparative ___________ is the study of anatomical patterns: similarities and differences among the body plans of organisms
The degree of adaptation to a specific environment, it is measured by its relative genetic contributions to future generations
Evolutionary ____________ is a form of heritable trait that enhances an individuals fitness
A body structure that apparently no longer seams to have a purpose in the current form of an organism of the given species is called a ___________ structure
Half- is the time it takes for half of the atoms in a sample of radioisotope to decay
A supercontinent that existed before pangea, more than 500 million years ago
Line of decent
A supercontinent that began to form about 300 million years ago, broke up 100 million years ago
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It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
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