BIOLOGY MIDDLE SCHOOL

I need the answer to this
i need the answer to this - 1

Answers

Answer 1
Answer:

Answer:

2 one

Explanation:
Answer 2
Answer: Option B is the correct answer

Related Questions

Maps are examples of ____ models that people might use everyday.
Veins _____. carry blood away from the heart produce red blood cells are only found in the heart usually carry deoxygenated blood
Which state of matter will hold its shape without a container? a. solid c. gas b. liquid d. plasma Please select the best answer from the choices provided A B C D
What is ascus in your own words
Enviroment factors can influence natural selection because they can increase or decrease A) the number of chromosomes in an individual.B) the number of chromosomes in a population.C)the amount of genetic variation in an individual.D) the amount of genetic variation in population.

How are conduction and indoction alike and how are they different

Answers

Both conduction and induction involve a movement of electrons. Conduction is the transfer of electrons from a charged object to another object by direct contact. Induction does not involve direct contact. Instead, induction is the movement of electrons from one part of an object to another as a result of the electric field of the second object.  What is the difference between conductive and non-conductive?  Conductive materials are good conductors of heat or electricity. Nonconductive materials are not good conductors of heat or electricity. I hope this helps! :)

Answer:

Both conduction and induction involve a movement of electrons. Conduction is the transfer of electrons from a charged object to another object by direct contact. Induction does not involve direct contact. Instead, induction is the movement of electrons from one part of an object to another as a result of the electric field of the second object.  What is the difference between conductive and non-conductive?  Conductive materials are good conductors of heat or electricity. Nonconductive materials are not good conductors of heat or electricity.

Explanation:

-. In which phylum does a coelom first appear?a. Annelida
b. Mollusca
c. Nemertea
d. Phoronida​

Answers

Answer:

The answer is a. Annelida

Which characteristic do cyclones and anticyclones have in common?

Answers

Cyclones and anticyclones are both air pressures caused by the Earth’s rotation.  They are rotating winds responsible for the weather conditions we experienced in a short or long period of time on a scale of days or weeks. 

Their one most common characteristic is their wind movement. They are both winds moving in a circular motion. 

Though we don’t often hear about anticyclones; however, it is the exact opposite of cyclones or ‘storms’.  
Their one most common characteristic is that they are both winds moving in a circular motion. They are rotating winds responsible for the weather conditions we experienced in a short or long period of time on a scale of days or weeks. 

Predator-prey relationships DECREASECompetition DECREASE
Toxins BOTH
New habitat BOTH
Disasters DECREASE
Increased food source INCREASE

Answers

This is correct to me

Answer:

thx

Explanation:

Which statement about natural selection is true?A.)Natural selection and evolution are two terms for the same phenomenon.

B.)Natural selection is an outdated theory to explain how evolution took place.

C.)Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.

D.)Natural selection is the process by which organisms develop variation in traits, which gives them a better chance of survival.

Answers

Answer: C). Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.

Explanation:

Natural selection is a natural phenomena which involves differential survival and reproduction of individuals who have better phenotypic traits over others. Such organisms survive and reproduce in adverse environmental conditions. Thus nature selects the individuals with better traits.
The answer is “C”. Natural selection is about ones traits being better than another’s which allow it to survive in the wilds longer.

RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scientific laboratories? A. RNAi has been used in laboratories to make bacteria more susceptible to antibiotics, but has limited application in eukaryotic cells.

B. RNAi is a powerful tool for degrading mRNA, but because it doesn't degrade other types of RNA, its use is limited.

C. RNAi is observed in nature, but it can't be used in laboratories.

D. RNAi allows scientists to turn off one gene specifically to study its effect.

Answers

Answer:

(D). RNAi allows scientists to turn off one gene specifically to study its effect.

Explanation:

RNAi (RNA interference) can be defined as a process, which involves inhibition of gene expression by degrading the targeted mRNA molecules. This technique is widely used in laboratories to study the functions of different genes by targeting them.

For this, a dsRNA molecule is formed having a sequence complementary to target gene and introduced into the cell or organism. This RNA is recognized as exogenous RNA and triggers activation of RNAi pathway.

RNAi pathway leads to a significant decrease in expression of a target gene. Hence, physiological role of the targeted gene product can be check by studying the effect of decrease in its expression.

Thus, the correct answer is option (D).

Answer:

The Answer is option D

Explanation:
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The color, taste, and juiciness of a particular variety of strawberry makes it very popular. Growers are able to plant hundreds of acres of this variety, and all the plants are exactly the same, since they reproduce asexually. Explain why this lack of diversity in the strawberry field could prove to be a problem for the growers.
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