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What kind of animals are in Phylum Cnidaria?

Which of these conservation ecologists would most likely have agreed with the Bureau of Land Management’s recent decision to cut off all human access to a few large sections of desert lands?

You discover a new species in a remote rainforest, but this species exhibits some unusual characteristics. It has feathers, but cannot fly, it just uses its feathers to provide insulation and help regulate body temperature, similar to fur. Additionally, this creature produces an oily substance from something equivalent to salivary glands that is not milk but similar to it in that it is used to nurse its young and in nest-building. It builds nests and lays eggs, but it also shows a remarkable level of parental care, with both parents actively involved in feeding and raising their offspring. Given these intriguing characteristics, speculate on the classification of this unique species. Think about shared characteristics. Is it most likely to be a mammal, non-avian reptile, amphibian, or bird?

Bighorn sheep population growth.jpg Five new individuals were added to a small population of bighorn sheep in 1986, and ten more were added between 1990 and 1994. According to the figure, what occurred in this population after these additions?

In class, we discussed sea otters. Sea otters in Alaskan kelp forests have what kind of role in the ecosystem?

The symbols +, -, and 0 are to be used to show the results of interactions between individuals and groups of individuals. The symbol + denotes a positive interaction, – denotes a negative interaction, and 0 denotes where individuals are not affected by interacting. The first symbol refers to the first organism mentioned. What interactions exist between arbuscular mycorrhizal fungi and plant roots?

Which of the following statements does not support the conclusion that giraffes are K-selected species?

What impact does sea level rise have on coastal nesting birds?

Which term refers to a community of organisms and their interactions with the physical environment in which they live?

What is the purpose of a swim bladder in fish?