Which has become the greatest source of environmental change a) acid rain b) energy c) conservation d) human activity

Answers

Answer 1

Answer:

human activity, i think.

Answer 2

Answer:

human activity

Explanation:

Humans can build things acid rain and the others cant,Human Activity has changed most of everything


Related Questions

When creating a graph why is an appropriate tittle for a graph important

Answers

Answer:

Because when they look at the graph they look at the title to figure out what the graph is showing

Explanation:

state the doctorine of original evolution.

Answers

Answer:

because it is life

Explanation:

The DNA sequence that makes up the genetic code of an organism determine which traits the organism will exhibit

Answers

Answer:

How are the instructions coded by DNA translated into an organisms physical traits. They are translated into proteins which express an organism's physical traits. In DNA, the structure and size of the four nitrogen bases allows only for one kind of base to pair with one other kind. This is called the base-pairing rule.

Explanation:

what is the highlighted number ?

Answers

Answer:

I think it is the atomic mass, or the atomic weight.

Explanation:

The number above the symbol is the atomic mass (or atomic weight). This is the total number of protons and neutrons in an atom.  The number below the symbol is the atomic number and this reflects the number of protons in the nucleus of each element's atom.

(I'm so sorry if I'm wrong)

Hope this Helps!

best answer gets brainliest

Answers

Answer:

1) Crest

2) Trough

3) Wavelength

What are atoms? What particles are they composed of? What is relative location and charge of each particle?

Answers

Explanation:

an atom is the smallest chemical particle that exists

the are composed of 3 main things

protons

neutrons

electrons

protons and neutrons are located in the nucleus of the atomic structure( centre) and electrons are in shells out of the nucleus

protons are positive charged

electrons are negative charged

neutrons don't have a charge as their charge is too small and considered as nothing so 0

A cell is 30 µm in width. Assume that the cell is cube shaped.
What would be the length of the side of the cell if you wanted to double the surface area to volume ratio of the cell?

Answers

Answer:

15

Explanation:

I got it wrong and this was the answer it gave me

Question 4 (2 points)
Separately sodium and chlorine are dangerous, but together they create
a
b
ООО
a poison
baking soda
salt
C
d
nothing

Answers

Answer:

salt is the correct answer

Is eclogite a mineral or a rock?

Answers

Answer:

yea

Explanation:

Eclogite, any member of a small group of igneous and metamorphic rocks whose composition is similar to that of basalt. Eclogites consist primarily of green pyroxene (omphacite) and red garnet (pyrope), with small amounts of various other stable minerals—e.g., rutile.

From google btw

Punnet square Rr x Rr diagram

Answers

Answer:

RR,Rr,Rr,rr

Explanation:

Answer:

RR,Rr,Rr,rr

Explanation:

Just combine all the possible combinations.

both fish seen here are african zebra cichlids they have two color alleles.

Answers

Answer:

what fishes are you talking about

Which situation is MOST likely to cause sympatric speciation?

A
Galapagos tortoises developing differently on two different islands
B
changes in two deer populations after an earthquake separates them
C
a forest bird population dividing into two as they eat different seeds
D
Oceania splitting up to separate koalas and Tasmanian tigers

Answers

i think A i not sure

find the solution to the equation
[tex] {x}^{2x} - 5x {}^{2} + 4 = 0 \\ [/tex]

Answers

Here you go, hope it helps

Chapter 3 Study Guide (Connect-ED)
Please answer as much as you can, but try to answer ALL if you can.
1. Use the term sister chromatids in a sentence.
2. Define the word centromere in your own words.
3. The new cell formed by mitosis are called ________.
4. Use the term cell differentiation in a sentence.
5. Define the term stem cell in your own words.
6. Organs are a group of _______ working together to preform a different task.

Answers

Answer:

1. Sister chromatids are two identical copies of one chromosome.

2.The place where the sister chromatids are attached.

3. a diploid cell

4. Cell differentiation is when a cell turns from one type to another.

5. a cell that is uniquely able to develop into another.

6. tissues

Check Concepts
41. Using the scientific definition, which state-
ment is always true of work?
A) It is difficult.
B) It involves levers.
C) It involves a transfer of energy.
D) It is done with a machine.

Answers

Answer: C. It involves a transfer of energy.

Using the scientific definition, the statement that is always true of work is it involves a transfer of energy. The correct option is C.

What scientific theories?

Scientific theories are the theories that are given by scientific facts and information. These theories are based on observation of natural things and places.

There is the transfer of energy in the natural world. Every organism and plant is connected with each other in the form of a transfer of energy. This is called a food chain.

In the food chain, the organism is divided into different levels. These levels are based on their food. They are autotrophs, heterotrophs, and decomposers. Autotrophs have the largest amount of energy.

Thus, the correct option is C) It involves a transfer of energy.

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Which cell has the GREATEST surface area to volume ratio?
O Chicken egg
O Skin cell
O Bacterial cell
O Liver cell

Answers

The cell with the greatest surface area to volume ratio is the smallest cell, in this case, the bacterial cell.

As a cell increases in size, the proportional increase in volume is higher than that of its surface area. This tells us that the bigger a cell becomes, the lower its surface area to volume ratio will be.

The chicken egg is just one large cell, the largest cell produced by most animals. The skin and liver cells are much smaller, measuring roughly 25-30 micrometers. However, the smallest of the list by far is the bacterial cell, measuring a mere 1-3 microns. This size tells us that the greatest surface area to volume ratio belongs to the bacterial cell.

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Which is the process by which gas exchange between the respiratory system and the blood cells in the cappilaries occurs? transfusion condensation evaporation diffusion

Answers

Answer:

Diffusion

Explanation:

Diffusion is the process by which molecules of substances move from regions of higher concentration to regions of lower concentration until equilibrium concentration is attained. This movement of molecules is because a concentration gradient exists between the two regions.

Blood cells in the capillaries is low in oxygen because the cells have used up the oxygen in cellular respiration. However, in the lungs, the oxygen concentration is high due to inspiration of oxygen from the external environment. Therefore, a concentration gradient exists between the lungs and blood cells in the capillaries. Oxygen from the lungs diffuses into the blood cells in the capillaries, and these blood cells are then returned to other parts of the body by the circulatory system. This is a continuous process and is known as gaseous exchange.

Answer:

Diffusion

Explanation:

The number of chromosomes that result from mitosis is _____.

the same as original cell
double the original cell
half of the original cell
none of the above

Answers

it would be the same as original cell.

Answer:

Hello! This answer would be the same as original cell!

Explanation:

I really hope this helps!

which of the following correctly describes the induced fit process of how enzymes work

1.the substrate binds and the enzyme split apart prior to actiong on the substrate

2. the substrate binds and the substrate changes changes shape and then substrate is acted upon by the enzyme

3. the substrate binds and is immediatelyacted upon by the enzyme

4. the substrate binds and the enzymes changes shape and then the substrate is acted upon by the enzyme ​

Answers

Answer:

The correct answer would be number 2

Explanation:

The correct description of the induced fit process of how enzymes work is;

The substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme ( 2 )

In an Ideal fit model for catalysis, the substrate will bind to a site ( active ) and the substrate bond to the site will change its shape before been acted upon by the enzyme to form a complex ( enzyme- substrate ).

The enzymes ( biological catalyst )does not change shape permanently during the reaction process but it returns to its original shape after the reaction ( end of reaction )

Hence we can conclude that correct description is the substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme.

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6. In neighboring water molecules, oxygen is attracted to ____
forming a ____ bond

Answers

Answer:

hydrogen, covalent

Explanation:

In neighboring water molecules, oxygen is attracted to Hydrogen forming a hydrogen bond

Different between the two types of reflection regular reflection and irregular reflection? "plz help me am new here"​

Answers

Answer:

The light reflection is the returning back of light waves in the same medium on meeting a reflecting surface, and the surface at which the reflection takes place is called the reflecting surface, The light reflection is classified according to the nature of the reflecting surface into the regular (uniform) reflection, and the irregular (non-uniform) reflection.

Explanation:

What is the correct answer?

Answers

Answer: Answer is B

Explanation:

Which of the following best describes how meiosis helps maintain genetic variation?

A) meiosis replaces mutated genes with normal ones before creating new cells
B) meiosis exchanges genetic material between homologous chromosomes
C) meiosis produces new nuclear membranes before the second cell division
D) meiosis replicates chromosomes twice before the cells undergo cell division

I thought it would’ve been d but I guess not

Answers

Answer:

i believe its C

Explanation:

Which of the following can be used to move a sperm cell?
A. flagella
B. cell wall

Answers

Not sure but I’m pretty sure it’s flagella

Answer:

A.flagella

Explanation:

the flagella is the organelle  that moves the  cell

plz mark me as the brainliest

What could be the reason that Jesse cannot lose weight, despite help from his friends?
a) He may have a high set point.
b) His pituitary could be overactive.
c) He may have a high RAS.
d) None of these

Answers

Answer:

a) He may have a high set point.

Explanation:

How are the krebs cycle and the electron transport chain related?

Answers

They are related because they both are involved in the process of producing atp.
The Krebs cycle creates vitamin c, heat and a little bit of atp.
Then the process of electron transport helps to produce the rest

Photosynthesis

Use respiration in a sentence.






Answers

Answer:

Respiration is one of the chemical reaction that happens in all living cells.

Explanation:

Answer:

rhwheveeyeweuxeyeyeyheve

Co..me up with your own example of a stimulus and response with living organisms
.

Answers

Answer:

A crocodile goes into the shade when the temperature goes high.

An example of a stimulus and response with living organisms is as follows:

Whenever any living organism is exposed to a warm or hot object it immediately pulls back its own body from this point of contact. This is also called as reflex action.

What is a Stimulus?

A stimulus may be defined as a type of thing or event that immediately provokes a specific functional reaction by an organ or tissue in response to a specific treatment.

The information that living organisms perceive from the external world is sensed by the sense organs then with the help of nerves it sends to the brain which stimulates a specific action and sends messages to the body to react in a particular way with the respect to the stimulus.

Therefore, an example of a stimulus and response with living organisms is briefly mentioned above.

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There are only three autosomal trisomic conditions (Patau, Edward, and Down Syndrome) where a fetus will survive to birth. Why do you think this is so?

Answers

Answer:

An autosomal trisomic condition is the deviation of the chromosome number where an extra copy of the chromosome present with the chromosome pair. The three trisomic conditions are Patau - extra copy at chromosome 13, Edward - extra copy of chromosome 18, and Down Syndrome - an extra copy of chromosome 21

Children or fetuses affected by these trisomies show the least life expectancy and develop as mentally week, other than these trisomies other trisomic conditions are highly lethal so we do not see the survivors and it is due to dosage sensitivity which means that increasing or decreasing their expression levels will reduce cell viability.

A large number species on Earth become extinct during a short time period about 65 million years ago. Based on this pattern of extinction, which is the MOST likely cause

Answers

Answer and Explanation:

During the whole biota history, there occurred extinctions due to different reasons.  

During the Cretaceous, which took place between 145-65 million years ago, there occurred a massive extinction that eliminated most of the species on the Earth. Many of the characteristic groups of this period were affected. Dinosaurs, Plesiosaurs, Ammonites, Tricodonts, Cycas, Gynkgos, Conifers, the recent angiosperms, birds, and mammals.  

The extinction was caused by the volcanic eruptions, and the unusual fall of many different asteroids, which caused important changes on the Earth´s surface. The consequent climatic change was what ended affecting all the species directly. The extinction was gradual, although it occurred in a short geological lapse of time.  

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