Over the past year, i have learned that Biology is eveywhere. From species to atoms, everything is releated to science. It is amazing how we find fossils from millions of years ago. My Question is why the Sea turtle's life longer than a human's life? I find that strange because humans usually live longer than most species. Humans live around 70-90 years.
Thursday, March 24, 2011
Blog #8
Blog 8 Your choice talk about something you learned or ask a question about something that is confusing you
Over the past year, i have learned that Biology is eveywhere. From species to atoms, everything is releated to science. It is amazing how we find fossils from millions of years ago. My Question is why the Sea turtle's life longer than a human's life? I find that strange because humans usually live longer than most species. Humans live around 70-90 years.
Over the past year, i have learned that Biology is eveywhere. From species to atoms, everything is releated to science. It is amazing how we find fossils from millions of years ago. My Question is why the Sea turtle's life longer than a human's life? I find that strange because humans usually live longer than most species. Humans live around 70-90 years.
Thursday, March 17, 2011
Blog #7
Blog 7 Compare and contrast two biomes describe them in detail include pictures of plants and animals you are liklely to see.
Desert Biomes can withstand the power of the Suns heat, species that adapt to the desert can survive for a long time without water. For example, a camel roam in the desert, the camel stores water on their humps and go take people to their locations.
Marine
Marine regions cover about three-fourths of the Earth's surface and include oceans, coral reefs, and estuaries. Marine algae supply much of the world's oxygen supply and take in a huge amount of atmospheric carbon dioxide. The evaporation of the seawater provides rainwater for the land. They include many species like fishes and whales.
Desert Biomes can withstand the power of the Suns heat, species that adapt to the desert can survive for a long time without water. For example, a camel roam in the desert, the camel stores water on their humps and go take people to their locations.
Marine
Marine regions cover about three-fourths of the Earth's surface and include oceans, coral reefs, and estuaries. Marine algae supply much of the world's oxygen supply and take in a huge amount of atmospheric carbon dioxide. The evaporation of the seawater provides rainwater for the land. They include many species like fishes and whales.
Thursday, March 10, 2011
BLOG 6
Blog #6 Which level of a food pyramid is the most important? Support your answer
The most important is grain, having grain in your body is good. It fills you up because its a whole type of food. Grain could be created into many type of foods like noodles, pasta and rice. That goes really well with side dishes, so we can be full. With having food in our stomach, we will have tons of energy for later.
The most important is grain, having grain in your body is good. It fills you up because its a whole type of food. Grain could be created into many type of foods like noodles, pasta and rice. That goes really well with side dishes, so we can be full. With having food in our stomach, we will have tons of energy for later.Tuesday, March 1, 2011
Blog #5
Blog #5 There have been 5 major extinction events throughout history, are humans impacting the 6th? Why or why not?
Yes, humans hunt and polute the world which the animals, insects, repetiles or any other thing live in. If you think about fishermen, they catch a load of fishes for markets. Hunters hunt for the joy of it. If that keeps up, many will be extinct and soon our world will not have a well working food chain. The only way to fix is this is to hunt less, we do neede these resources to survive.
Yes, humans hunt and polute the world which the animals, insects, repetiles or any other thing live in. If you think about fishermen, they catch a load of fishes for markets. Hunters hunt for the joy of it. If that keeps up, many will be extinct and soon our world will not have a well working food chain. The only way to fix is this is to hunt less, we do neede these resources to survive.
Thursday, February 24, 2011
Blog #4
Blog # 4 Describe the three types of selection: directional, stabilizing and disruptive and give an example of each in your own words
Direction is choosing one thing only. The trait favors one that it likes. So it is kind of like its personally choosing the trait
Stabilizing -When selective pressures select against the two extremes of a trait, the population experiences stabilizing selection. For example, plant height might be acted on by stabilizing selection. A plant that is too short may not be able to compete with other plants for sunlight. However, extremely tall plants may be more susceptible to wind damage. Combined, these two selection pressures select to maintain plants of medium height. The number of plants of medium height will increase while the numbers of short and tall plants will decrease.
Disruptive selection pressures act against individuals in the middle of the trait distribution. The result is a bimodal, or two-peaked, curve in which the two extremes of the curve create their own smaller curves. For example, imagine a plant of extremely variable height that is pollinated by three different pollinators, one that was attracted to short plants, another that preferred plants of medium height and a third that visited only the tallest plants. If the pollinator that preferred plants of medium height disappeared from an area, medium height plants would be selected against and the population would tend toward both short and tall, but not medium height plants. Such a population, in which multiple distinct forms or morphs exist is said to be polymorphic.
Direction is choosing one thing only. The trait favors one that it likes. So it is kind of like its personally choosing the trait
Stabilizing -When selective pressures select against the two extremes of a trait, the population experiences stabilizing selection. For example, plant height might be acted on by stabilizing selection. A plant that is too short may not be able to compete with other plants for sunlight. However, extremely tall plants may be more susceptible to wind damage. Combined, these two selection pressures select to maintain plants of medium height. The number of plants of medium height will increase while the numbers of short and tall plants will decrease.
Disruptive selection pressures act against individuals in the middle of the trait distribution. The result is a bimodal, or two-peaked, curve in which the two extremes of the curve create their own smaller curves. For example, imagine a plant of extremely variable height that is pollinated by three different pollinators, one that was attracted to short plants, another that preferred plants of medium height and a third that visited only the tallest plants. If the pollinator that preferred plants of medium height disappeared from an area, medium height plants would be selected against and the population would tend toward both short and tall, but not medium height plants. Such a population, in which multiple distinct forms or morphs exist is said to be polymorphic.
Thursday, February 17, 2011
Blog 2
Blog # 2 Why is fossil record hard to interpret?
With the fossils we have nowadays, it is still unsafe to call what happend to the reptile or mammal. With only a little trace, we could only think that much. Rocks have a little information of what happend millions of years ago. It is possible to guess the right information about the rock. But we would not be so sure even when we come to a conclusion.
Blog 3
Microevolution is a change in gene frequency within a population. This change is due to four different processes: mutation, selection, gene flow and genetic rift. For example, as the bird species live for many generations, evolution would start to take effects. The DNA is altered and it is some-what rare to have a mutation. Basically, genes would cross thus creating something additional.
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