Blog 14

Both the grasshopper and the crawfish have simikarities. They have a shell like outer skin. They have a special accessory  such as the grasshopper's hind legs and the crawfishes claws. They are different colors, the crwafish is red and the grasshopper is a greenish color.

Blog # 14

I think the specimen that seems more like a human is the crawfish because it has legs eyes and all the same things we do. The differences are the hard shell on the outside and the soft stuff on the inside. Also that it has more than two legs and has claws and antennas.

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

The thing that surprised me about a worm is that it has so much in its little body. I thought they were just a body and nothing much inside. As i found out they have lots of different body parts. They have a mouth a blood or vessels and there insides such as a gizzard.

Blog #11

This shows how a new seed or plant is made from a flower. The pollen is taken to another flower and forms a female spore and it produces eggs. It then grows into another plant or tree and grows to do the same process over again.

Blog #10

Dissection is important to biology curriculum because it is a study of animals or whatever is being dissected. For example if a frog was being dissected the person would learn about its insides and what special traits it has compared to something else. Many animals are good to disect such as frogs, snakes, worms, and more.

Blog 9; Define words

Competition : In a community, competition is always occuring, in situations such as food or looks etc.

Commensalism : is a class of relationship between two organisms where one organism benefits but the other is neutral.

Mutualism : is the way two organisms biologically interact where each individual derives a fitness benefit.

Predation :describes a biological interaction where a predator feeds on its prey.

Parasitism : is a type of symbiotic relationship between organisms of different species where one organism, the parasite, benefits at the expense of the other, the host.

Something I learned/ Something im confused about

Something I learned about recently was about different types of skulls. Skulls from both human and animals. I learned how to measure them and how to tell them apart. I am confused about all the work we are getting i have lost track of a  lot of things.

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

Marine - In the marine biome, you are very likely to see fish, all sorts of fish. Fish big and small sharks and lots or different rocks. In the desert you are likely to see lots of sand. There are very little chances of seeing animals but theres animals like lizards, snakes, scorpians, and lot more reptiles and insects.

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

I think the fruits and vegetables part of the food pyramid is the most important because it contains lots of vitamins and minerals. It also contains water in which humans need and fruits are very healthy and good for us to eat.

Blog #5 There have been 5 major extinction events throughout history, are humans impacting the 6th?

Yes i think it is possible for humans to go extinct but the main population on earth is human so it would take a very long time for this to happen unless a natural disaster were to occur.

Blog #4 -Describe the three types of selection: directional, stabilizing and disruptive

Directional selection: is a mode of natural selection in which a single phenotype is favored, causing the   allele frequency to continuously shift in one direction.

Stabilizing  selection: is a type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value.

Disruptive selection: describes changes in population genetics in which extreme values for a trait are favored over intermediate values.

Blog #3 Microevolution

Microevolution is a change in gene frequency within a population. The three step processes is mutation,  gene flo, and genetic drift. Natural selectionis one way variation occurs. Another way is genetic basis of a phenotype becomes more common in a population. The last way is if adaption occur within a population.

Blog # 2 Why is fossil record hard to interpret?

Since Darwin the fossil record has been pushed back to between 2.3 and 3.5 billion years before the present.   Most of these Precambrian fossils are microscopic bacteria or microfossils. However, macroscopic fossils are now known from the late proterzoic. The ediacara dating from 575 million years ago contain early multicellular eukaryotes. The fossil record and the form of the basis of the science of biostrastratigraphy or the age of rocks based on the fossils they contain.

Why is evolution a theory and not a law?

Evolution is the change over time in the proportion of individual organisms differing in one or more inherited traits. Evolution happens when there is a variation of inherited traits within a population. I think that from this, Evolution is a theory because it is not guaranteed to happen such as laws happen all the time. Theories are predictions on what will happen and laws are what will happen. Evolution will not always happen it is more a prediction.

LAST BLOG OF THE SEMESTER

My favoriite activity/topic this year is my 6th period class which is baseball. It is my favorite because its the thing i love most in my life. My least favorite is most of my classes that I have a bad grade in. If i could change one thing it would be my grades i would change it by not missing assignments and doing better.