BIOLOGY MIDDLE SCHOOL

- 4y – 7y² – 2y ² – 7 x 3 – 4y² + y²
​

Answers

Answer 1
Answer:

Answer:

-7x^3 -12y^2-4y

Explanation:

The -7x^3 is alone so you don't have to worry about adding or subtracting it. You add -7y^2-2y^2-4y^2+y^2 together then you just put the -4y because it's alone.
Answer 2
Answer: Here is the answer to your problem

Related Questions

What type of organisms perform cellular respiration?
One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
A scientist claims to have found a fossil that is more than 6 billion years old. Why is the scientists claim false?A. Fossils disentegrate after 10,000 years.B. Earth had not yet formed 6 billion years ago.C. The hot magma covering early earth would have destroyed fossils.D. Life did not emerge on earth until 5 billion years ago.
Which bonds are found inside a water molecule, between hydrogen and oxygen?
Evidence: Farmers Burns and Dexter-Kemp are at their wits end. It has been a rough year farmingtheir crop of oranges. They have noticed an increase in insects climbing on their fruit. The veins onthe leaves are yellow and there is splotchy mottling all over the leaves. Some of the leaves are fallingoff prematurely. After the fruit ripens, it starts to turn green.What is the disease ?

Describe at least two events during meiosis that increase the genetic diversity of the daughter cells produced.

Answers

1. crossing over allows for genetic recombination
2. the haploid nature means that every daughter cell will most likely be different, even not considering crossing over

Answer;

-Crossing over and random independent assortment.

The two events that increase the genetic diversity of the daughter cells produced are crossing over and random independent assortment.

Explanation;

-During prophase of meiosis I, the double-chromatid homologous pairs of chromosomes cross over with each other and often exchange chromosome segments, which resulting to recombination that creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.

-Additionally, when cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other, this results in gametes having unique combinations of chromosomes.

What is phosphate group in dna?

Answers

A phosphorus atom. Bound to four Oxygen atoms.. hope this helps
A phosphate group is the DNA backbone in DNA

Overwhelming scientific evidence suggests that all living things share acommon *

ancestor
cell type

energy source
cell structure

Answers

The answer is ancestor.

Energy source is incorrect, as plants function through photosynthesis unlike animals. Different organisms also have different types and structures of cells. Plant cells for example, are much different than that of an animal.

Why do oceanic upwelling promote growth of micro plankton

Answers

Because in the process of oceanic upwelling , the currents bring out the nutrient-rich water from the deep water to the surface. This nutrient-rich water will be the perfect breeding spot for micro plankton since now they have a lot moree source of food

Light is a form of what type of energy

Answers

Radiant Energy is electromagnetic energy that travels in transverse waves. Radiant energy includes visible light, x-rays, gamma rays and radio waves. Light is one type of radiant energy. Solar energy is an example of radiant energy.
Radiant Energy I don't really have an explanation. Sorry about that but I hope this helped anyways! :)

Which statement is true of a placenta?a. The placenta passes oxygen, nutrients, and other useful substances from the fetus to the mother.
b. The placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus.
c. The placenta mixes blood from the mother and fetus together.
d. The placenta protects the mother from being attacked by the fetal immune system.

Answers

B is the answer. The placenta provides nutrients for the fetus and removes waste from the fetus.
Other Questions
Why can't we use most of the the freshwater on Earth?
In cross between a purebred tall plant and a purebred short plant, the offspring will all be plants?
A woman has blood type AB and her husband has blood type O, what are the possible genotypes and phenotypes for any child they might have? a. Could any of their children be blood type O? Explain.
How does ozone depletion contribute to atmospheric warming ?