Answer:
So there's a simple explanation for the Great Oxidation Event. It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere. ... That means the cyanobacteria were busy pumping out oxygen for at least half a billion years before oxygen started appearing in the air.
Explanation:
The neck is a ________.
A. First Class Lever
B. Second Class Lever
C. Third class Lever
D. fourth class lever
Answer:
The neck is a first class lever
Explanation:
Answer:
A. a first class lever
Explanation:
All life processes occur within cells. *
10 points
True
False
Answer: true
Explanation: all cells include life processes
Answer:
true
Explanation:
all life processes occur within cells
A farmer lost most of his crops last year because of insects. This year he decided to use pesticide to kill the insects. However, some of the insects survived the pesticide and have reproduced. The new population of insects is not affected by the pesticide. After several generations, more insects are born that survive the pesticide. What process explains the change in insect population?
Question 2 options:
extinction
artificial selection
genetic engineering
natural selection
5. How is this different from Darwin's idea of fitness?
Answer:
Darwinian fitness differs from the “physical fitness”, which is more associated with health, muscle tissues, oxygen, and physical effort. Darwinian fitness is more concerned about reproductive success. Darwinian fitness describes how successful an organism has been at passing on its genes.
Differences in traits are called "blank" and explain why siblings don't look exactly alike. *
O variations
O mutations
O environmentals
O adaptations
Answer:
variations says it all...
Tropical rain forests receive heavy rainfall. How do the trees and plants of this region withstand rotting?
Answer:
The trees and plant withstand rotting in tropical rain forest using some of these mechanisms.
Explanation:
Tropical rain forests are known for the presence of heavy rainfall, due to this, there might be a lot of water retention in the root. Some trees and plants however are able to store this water and use some of the below mentioned methods to prevent decay and rot.
Some trees in the tropical rain forest may produce very hard outer layer, these hard outer layer will protect the plant and trees form predators and microorganisms from penetrating into the inner tissues of the tree.
Some withstand rotting by producing chemical compounds, these chemical compounds prevents predators and microorganisms from destroying the plants and trees.
The diagram below represents a microscopic structure observed during mitosis.
X
А
The region indicated by letter A is known as
1.
an enzyme
2.
a gamete
3.
a gene
an amino acid
Answer:
Gene
Explanation:
It should be gene, because it is pointing to a segment on the chromosome. Also it cannot be any of the other options, so it has to be a gene.
When the Earth's continental crust and ocean crust formed, they were different densities. Why did they differ in density and how did this affect their formation?
A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.
B.) The continental crust was thicker and more dense. It sunk below sea level, separating land from water.
C.) The continental crust was thinner and less dense. It rose above sea level, separating land from water.
D.) The continental crust was thinner and more dense. It sunk below sea level, separating land from water.
I think it’s B, but I’m not completely sure. Help please!
Answer: A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.
Explanation:
The Ocean crust is made out of rocks like basalt with a thickness of about four miles. The Continental crust on the other hand is made out of granite and other similar minerals and is between six and 47 miles in thickness which makes it thicker than the Oceanic crust.
With basalt being more dense than granite, the Oceanic crust sank and the Continental crust rose thereby separating land from water.
Answer:
Answer: A.) The continental crust was thicker and less dense. It rose above sea level, separating land from water.
Explanation:
Toook the testttt :)))
FLVS??? :)
Which of the following statements about natural selection is true:
• Individual organisms change over time
•Populations of organisms change over time
•Organisms do not change over time
Answer:
Option 2 (Population of organisms change over time.
Which process has the greatest potential for genetic variability?
O
A cell differentiation
O
B. interkinesis
O C. meiosis
O
D. mitosis
Is the brain made up of Neurons itself?
Please don't answer unless you know the answer
Answer:
Yup it is made of neutrons itself composed of both neutrons and glial cells
What happens when light strikes a transparent object?
A All the light passes through the object
B. None of the light passes through the object
C. All of the light is reflected then reabsorbed
D. Some of the light is scattered or absorbed and some passes through
Answer: A. All of the light passes through the object.
Explanation:
helppp with thissss !!
Answer:
Don't take my answer but I think it is light.
Explanation:
If I am right please give me brainliest or message me. I like friends
Again PLEASE help I will give Brainliest!!!!!!!!!!!!!!!!
Its the one all the way at the bottom
Help plsssssssssssssssss
Answer: D
Explanation: Sorry for no explanation
The following is the results of a genotype being "foiled" for a dihybrid cross: BS | Bs | bS | bs
Determine the parents genotype
A) BBSS
B) BBss
C) BbSs
D) BbSS
Answer:
C. BbSs
Explanation:
The foiled results of the genotype include both capital and lowercase versions of both letters, b and s.
This means the genotype has to be heterozygous for both the B and S traits, since the foiled results have both dominant and recessive alleles.
So, the genotype must be C, BbSs
The foiled results of the genotype for the offsprings include BS | Bs | bS | bs.
The parent's genotype will then be BbSs.
The genotype of both parents have to be heterozygous as a result of the
presence of its forms in the B and S traits. There is the presence of the
dominant (B,S) and recessive traits (bs).
The genotypes of the parent will however have both traits in them which
translates to the option C) BbSs being the most appropriate.
Read more on https://brainly.com/question/21102431
Which of these contribute to the reduction in the population of harvested organisms?
a) harvesters
b) government
c) scientific research
d) all of the above
Answer:
D
Explanation:
I think I think I think I think
Is this statement true or false? A change in temperature is always an indicator of a chemical reaction. true false
consider the cell labeled x in figure 10-9 containing 4 chromosomes. which of the four cells below it represents a healthy gamete that could be produced from this cell
Answer:
A) A
Explanation:
Prey
A. An animal that is hunted and killed by another for food
B. Is a way an animal’s body helps sit survive or live in its environment
C.is an animal that eats other animals
Answer: A
Explanation:
i took biology and all that fun stuff with trophic levels
does eliza have asthma or diabetes
Answer:
You did not give details, but asthma is the diffuculty of breathing and is in the respiratory tract. Diabetes, on the other hand, is when your body does not take care of the extra insulin (type 2), or when your body does not produce enough insulin and your blood sugar levels are off.(type 1)
Explanation:
Most of the mass in a large tree comes from?
Answer: Carbon is right
Explanation:
During photosynthesis carbon dioxide is pulled from the atmosphere and then captured into the tree's molecules and somehow it make the whole tree heavier.
ACTIVITY
Which of these is an opinion?
A
Scientists sent the new lichen to Oregon State University.
B
Yosemite National Park is in California.
С
Scientists will probably find more new lichen in Yosemite.
Lichen are made up of fungi and algae.
ASAP I NEED HELP, I GIVE COINS!
Which of the following fish would eat on the bottom of a lake or river?
A
B
C
None of the above
Answer:
It would be C because of the way his mouth is formed
Explanation:
GIVING BRAINLEST :))
A yeast cell that forms a bud is called the "mother cell." Why is there no mother cell after a paramecium divides?
There is no mother cell after a paramecium divides because it is divided by binary fission and the paramecium is divided into two identical cells, called daughter cells, there is no mother cell left.
What is paramecium?Paramecium is a protist. It is oval-shaped with cilia all over the body, and it is minute and can be seen only under a microscope. It engulfs its food through the body cavity, which is its mouth.
Binary fission means when the cell is divided into two daughter cells. The division is asexual reproduction. The cell divided DNA into two copies and then each cell gets the DNA.
Thus, there is no mother cell after a paramecium divides since binary fission is used and the paramecium is split into two identical cells, known as daughter cells.
To learn more about paramecium, refer to the below link:
https://brainly.com/question/19580554
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What characteristic enable the uterus to hold the fetus even though it is just the size of a fist?
help plsss :(
Answer:
Explanation:
It is made of flexible but strong tissues of granular cells. They are thick tissues so they don't tear down.
Can someone please tell me an explanation of Interpahse in mitosis please? Also please dont copy and paste
Answer: at the point when the cell develops and duplicates its DNA prior to moving into mitosis. During mitosis, chromosomes will adjust, isolated, and move into new daughter cells.
Natural selection is a mechanism for evolution.
O True
O False
true
Explanation:
Its true because something has to die for others to thrive.
how much force is needed to make a 12 kg object accelerate at 3 m/s
an increase in food and decrase im predatros would most likely ____?gentic varation in a population
Answer:
Decrease
Explanation:
sorry if it's not one of the choices