Someone please help me answer this, I need help

Explanation:

Platinum, gold and silver are used to make jewellery because the metals used in jewellery are always be chosen on the basis of its reactivity. It should be unreactive so that the metal does not tarnish. Many metals used for jewellery are expensive as well because they are rare.

Answer: 2

Explanation:

Answer:

2

Explanation:

I got this from my answer and here it what it said: Evolutionary genetic changes occur only in reproductive cells. Body Cells that undergo changes do not affect the evolution of that species

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Answer:

Changes in the environment may leave individuals less well adapted to compete successfully for resources such as food, water and mates. Sometimes an entire species may become unable to compete successfully and reproduce. These problems can lead to extinction.

Answer:

The correct answer is - sister chromatids are separated.

Explanation:

Meiosis is divided in two parts meiosis I and meiosis II. In the later part that is meiosis II is characterized by forming four haploid gametes by separating the sister chromatids in the two daughter cell.

Crossing over takes place in meiosis I that leads to recombination and reduces the chromosome number from diploid to haploid homologous chromosomes and then enters into meiosis II.

Answer:

A. Grass

Explanation:

In their natural habitat, organisms feed on one another in a relationship called PREDATION. Predation involves two organisms; one called the PREDATOR (the organism that eats) and the other PREY (the organism being eaten).

Organisms preying on one organism will naturally opt for a substitute once the previous prey is no longer accesible. This is the case of a fungus-infected corn that is no longer edible for predators. Hence, the predators will hunt similar feed, which is GRASS in this case.

Answer:

C

Explanation:

You could literally search that up. It's correct though.

"Sperm develop in the testicles within a system of tiny tubes called the seminiferous tubules. At birth, these tubules contain simple round cells. During puberty, testosterone and other hormones cause these cells to transform into sperm cells."

Answer:

Purple = BR

Red = RR

       B          R

R    BR        RR

R    BR        RR

50% BR, 50% RR

Answer:

Absorption is the transformation of radiant power to another type of energy, usually heat, by interaction with matter. The transmittance t of a medium is defined by the ratio of transmitted radiant power to incident radiant power.

Explanation:

Have a nice day! :D

Answer:

A asexual reproduction

Answer:

c,d

Explanation:

hehe don't be mad at me

Answer:

False.

Heterozygous means having two different alleles.

Answer:

Heterozygous individuals have two different alleles of a gene.

Explanation:

Answer:

I believe it's cirrus clouds.

Explanation:

Answer:

estuary

hope this helps

have a good day :)

Explanation:

Yellow color is always an adaptive trait in a yellow environment I agree with this claim.

Adaptive trait is defined as an element of the developmental pattern that makes it easier for its carrier to survive and/or reproduce in a succession of different situations.

Any heritable characteristic that enables a plant or animal to survive and procreate in its environment is referred to as an adaptation.

The process of modifying behavior, physiology, or structure to make it more suitable to an environment is known as adaptation.

It might also be described as the condition that a biological population has achieved after enduring modifications or changes.

There are three types of adaptive traits.

Thus, yellow color is always an adaptive trait in a yellow environment I agree with this claim.

To learn more about adaptive trait, refer to the link below:

https://brainly.com/question/1596691

#SPJ2

Answer:

With no doubt ,

The cell is the building block of all living things.

Answer:  The correct answer is To demonstrate that protecting endangered species can be effective

Explanation:  The Unit text pointed out how the flying squirrel population had risen from 10 to over 1100, taking it off the endangered species list and proving that the methods were effective.

Answer:

carbohydrates ,proteins and fat all have carbon, hydrogen and oxygen atoms

PLS GIVE BRAINLIEST

Answer:

C

Explanation:

Answer:

1.)true

2.)true

3.)true

4.)true

5.)true

6.)false

7.)false

Explanation:

Answer:

False: All arthropods belong to the Class Insecta

True: All rodents belong to the phylum Chordata.

False: All amphibians belong to the class reptilia.

True: All primates are mammals.

False: A lion belongs to the genus Felis.

False: All mammals are primates.

True: All Insects and lobsters are arthropods.​​

Hope this helps :)

Answer:

The correct answer is - C. It showed that different-looking animals are actually related.

Explanation:

DNA technologies help in developing the lineage of the organisms and more use of cladistics. DNA techniques help in determining which animals were closely related by studying the genetic change.

It is used to established new evolutionary relationships between different-looking animals as minor genetic changes may lead to morphological changes.

Answer:

VENUS

Explanation:

On Venus, one rotation on its axis takes the equivalent of 243 Earth days and the planet's orbit around the Sun takes the equivalent of 225 Earth days.

Answer:

Venus, I think

Explanation:

So outta these three, Venus is the closest to the sun, so the year is the shortest. Venus is also the planet with the longest day averaging at 116d 18h, so I think that's the right one. Sorry if this is wrong

hope this helps:|

Answer:

The rain containing excess of acids called an acid rain.

Explanation:

The rain becomes acidic because of harmful gases like carbon dioxide,

sulphur dioxide and nitrogen dioxide which are emitted as smoke from

vehicles and industries. These harmful gases dissolve in rain drops to

form carbonic acid, sulphuric acid and nitric acid respectively.

Effects of Acid Rain

 Acid rain makes the water of lakes, ponds and rivers too acidic

due to which fish and other aquatic animals get killed.

 Acid rain eats up the leaves of the trees gradually. By losing

leaves, the trees die. Acid rain also damages crop plants in the

fields.

 Acid rain damages the metal structures like steel bridges, etc

when it falls on them.

 Acid rain damages the surfaces of buildings and monuments made

up of marble.

Answer:

unicellular

Explanation:

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism.

Answer:

Unicellular

Explanation:

Uni means consisting of one, and Multi means more than one (:

Answer:

The correct answer is - Sugars produced in the leaves are used as an energy source instead of being stored in fruits.

Explanation:

The high temperature in climate leads to an increase in the respiration rate in the plants so they require more energy in the process.

They produce sugars in the leaves which leads to a decrease in the sugar content in the fruit as energy is the primary focus in such situation to survive in high temperatures.

Answer:

RR

Explanation: Two of the same alleles, and R=red