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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?

A country with zero human population growth is likely to be ________.

The hypothalamus detects fluctuations in temperature. The receptors on it are known as thermoreceptors. Skin also possesses thermoreceptors which can detect the temperature of the external environment. This information is relayed to the hypothalamus which can in turn transmit nerve pulses for corrective mechanisms to occur. If you are HOT, sweating and vasodilation occurs. If you are COLD, vasoconstriction and shivering occur. In extreme cold, blood flow to extremities decreases in order to protect internal organs. This is an example of:

turtles in ponds.png Which pond has a higher species richness?

The Gulf of Mexico “dead zone” is caused by: