Blog#12 What surprised you from the worm's dissection?

Firstable,l am surprised by this tiny worm's complex organ.lf l don't cut it out,l can't image how a little earthworm even contain so many things.Then,l realize its respiratory organ is just its mouth.lts brain is also kind of small if you compare it to its body.lts intestine is not very long.lts heart is vary from human by stay in the center of its body.At last,its anus is at the tip of the body surpised me as well.

Get a picture of alternation of generations put it in your blog and explain how it relates to plants

Alternation of generations (also known as alternation of phases or metagenesis) is a term primarily used in describing the life cycle of plants (taken here to mean the Archaeplastida). A multicellular diploid sporophyte, with N paired chromosomes (i.e. 2N in total), alternates with a multicellular haploid gametophyte, with N unpaired chromosomes. A mature sporophyte produces spores by meiosis, a process which results in a reduction of the number of chromosomes by a half. Spores germinate and grow into a gametophyte. At maturity, the gametophyte produces gametes by mitosis. Two gametes (originating from different organisms of the same species or from the same organism) fuse to produce a zygote, which develops into a diploid sporophyte. This cycle, from sporophyte to sporophyte (or equally from gametophyte to gametophyte), is the way in which all land plants and many algae undergo sexual reproduction.

Why is dissection an important part of a biology curriculum? Which animals and/or plants should be included in biological studies?

Dissection is important because it is usually the process of disassembling and observing something to determine its internal structure and as an aid to discerning the functions and relationships of its components.lt is necessary to use it in order to do much deeper research.Without to cut it out,we can only see the organism's cover,and it's not enough.However,l think the animals or the plants which is in danger should be included in biogical studies because after we keep on studying,it may have some breakthrough which can help them.

Blog 9 Define the different forms of community interaction: competition, commensalism, mutualism, predation, parasitism Give an example and a picture for each

competition occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time.for example,tiger and lion may compete each other by fighting for their prey.
predation is an interaction in which one organism captures and feeds on another organism.such as panther is depend on sheep or other animal to be its food.it needs to eat them in order to survive.

in mutualism,both species benefit from the relationship.many flowers depend on certain species of insects to pollinate them.they both get good advantage from each other.

in commensalism,one member of the association benefits and the other is neither helped nor harmed.for example,small marine animals called barnacles,often attach themselves to a whale's skin.yet,the barnacles benfit from the constant movement of water past the swimming whale,because the water carries food particles to them.however,whales do not have any disatvantage.

in parasitism,one organism lives on or inside another organism and harms it.as a parasite obtains all or part of its nutrientional needs from the other organism.

Blog 8 Your choice talk about something you learned or ask a question about something that is confusing you

l leared poplution is a thing that quite complicate,there are a lot  of  factors which can affect it by huge impact.For example,fish's amount is depend on algae's amount,if algae is vanished by human's collection.As a result,fish will become less as well.Also,if there are some big fish which depend on that fish,their amount will decrease,too.Therefore,l think it will be really detrimental to kill some small living things which you think they are not important because it may be plays a major role in a big ecology.l also wondering whether people can create an almost ideal conditions which can help some endangered animals.

Blog 7 Compare and contrast two biomes describe them in detail include pictures of plants and animals you are liklely to see

l am going to compare marine biomes and desert biomes.

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. Marine biomes' animal are usually be fish,carols,sharks or whales.

Deserts cover about one fifth of the Earth's land surface. Most Hot and Dry Deserts are near the Tropic of Cancer or the Tropic of Capricorn. Cold Deserts are near the Arctic part of the world.Hot and Dry Deserts temperature ranges from 20 to 25° C. The extreme maximum temperature for Hot Desert ranges from 43.5 to 49° C. Cold Deserts temperature in winter ranges from -2 to 4° C and in the summer 21 to 26° C a yearDeserts' plants and animals are suppose to be camel,cactus,or other thing will not need much water

Marine and desert biomes have a biggest different is one is contain infinite water while other is drought and almost have no water.

Blog #6 Which level of a food pyramid is the most important?

According to this picture,you can see that the bottom part of this food pyramid is the biggest.There are a lot of different kinds of food in it.Such as noodle,bread,cereal,donut,and rice.They are similar to each other because they all contain an essential substance to human----carbohydrate.lt's the most important thing to us for its big influence to our body.lt not only serves as the job of store energy,but also as structural components. Therefore,we need numerous of them.As this picture shows,we have to eat 6-11 sevings per day.Compare to other part of this food pyramid,there is no doubt about  fruits,fish,or ice-cream play less role than bread and rice in human structure.