Trace fossils are the remains of the activity of an animal, such as footprints, egg shells, and nests.可知,追踪动物的化石是研究动物行为遗留物,比如脚印,蛋壳,或者巢穴。没有提到身体body。所以答案是:D.(2)根据文章第二段信息:Water with minerals(矿物质) went into the bone and took the place ...
Trace fossils are the remains of the activity of an animal, such as footprints, egg shells, and nests.可知,追踪动物的化石是研究动物行为遗留物,比如脚印,蛋壳,或者巢穴。没有提到身体body。故答案为:D. 【2】根据文章第二段信息:Water with minerals(矿物质) went into the bone and took the place ...
Tracks and Trails: A simple walk along a beach shows a patient observer some of the life in the area. Tracks in the sand may show the three-toes-forward tracks marking a bird's presence. A trail of alternating scurrying footprints separated by a line indicates a lizard dragging its...
The footprints and tracks left behind by dinosaurs and other prehistoric animals are called trace fossils (痕迹化石). They can offer clues to how quickly an animal walked or ran and even what their skin may have looked like. Compared with the body fossils of bones and teeth, trace fossils ...
The footprints and tracks left behind by dinosaurs and other prehistoric animals are called trace fossils (痕迹化石). They can offer clues to how quickly an animal walked or ran and even what their skin may have looked like. Compared with the body fossils of bones and teeth, trace fossils ...
Trace fossils usually show tracks that animals made while moving across soft sediment. This sediment later hardens to become sedimentary rock. Trace fossils are valuable to palentologists because by studying these footprints, scientists can discover how the animals moved, which in turn gives important...
Are fossils found in sedimentary rocks? What layer would Cretaceous Period fossils be found? Where are tectonic plates found? What geologic feature is associated with a transform fault boundary in the Arabian Plate? Are footprints trace fossils? What is QAL rock on geology maps? What do tectonic...
【解析】1.D.细节理解题;根据语境 Trace fossils are the remains of the activity of an animal, such as footprints, egg shells , andnests.可知遗迹化石是动物活动的遗迹,如脚印、蛋壳和巢穴.没有提到身体,可知选D.2.C.细节理解题;根据语境 Water with minerals(矿物质) went into the bone and took ...
Trace fossils are the remains of the activity of an animal, such as footprints, egg shells, and nests.可知,追踪动物的化石是研究动物行为遗留物,比如脚印,蛋壳,或者巢穴。没有提到身体body。所以答案是:D. (2)根据文章第二段信息:Water with minerals(矿物质) went into the bone and took the place ...
Trace fossils, also known as ichnofossils, are fossils created by the passing of an organism, rather than fossils of the organism itself. Trace fossils include: •footprints •toothmarks •fossilized feces •burrows •nests Footprints provide knowledge about speed, length of stride, how ma...