i really need help on this one, A,B or C.

Answer:

B

Explanation:

B makes the most sense of your answer choices

Answer:

A)

Explanation:

This is because the law of the conservation of energy states that energy can not be created or destroyed. This means that you can not get more energy than you put in, this could be from any energy store. In addition That also means that you will not be able to get less energy than you put in.

Although energy can not be created or destroyed some energy is lost to heat or friction, this would mean that the energy is not transferred to the idea store and so is lost to inefficiency . An example of this would be wind turbines, the wind would move the turbine using kinetic energy however some of the energy is lost to heat and friction

Astronauts have been exploring outer space in manned spacecraft since 1961. Which of the following would have made it very dangerous for people to explore outer space?
A.
if the Earth's orbit passed through dense meteoroid fields
B.
if there were fewer cosmic rays passing through the solar system
C.
if the asteroid belt was farther from the Sun
D.
if the Earth's orbit was more circular than Venus' orbit

do capillaries transport blood from arteries to veins?

A company has several factories around the world and has decided to transition from burning fossil fuels to using alternative energy resources. How could a decrease in burning fossil fuels impact the atmosphere?
A It could decrease the oxygen levels of the atmosphere
B it could increase the nitrogen levels
C it could decrease the carbon dioxide levels
D it could increase the sulfur dioxide levels

Population distribution in Europe and Russia is most impacted by
A government restrictions
B. cultural differences
C. natural resources
D. climate
Please select the best answer from the choices provided
OA
OB
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The pH of a solution determines the charge of certain R groups. The pH of pineapple fruit ranges from 3.5 to 5.2. Predict the effect on the activity of bromelain if it is used in a product with a pH of 11.

Select the living organisms that will decrease as a result of the loss of coral in the food web.

The high temperature on Friday was 8 degrees above zero. The low temperature was 3 degrees below zero. Which expression gives the average of the low and high temperatures?

a
Left-bracket negative 3 + (negative 8) right-bracket divided by (2) Right-bracket

b
(negative 3 + 8) divided by 2

c
(negative 3 + 8) divided by (negative 2)

d
Negative (3 + 8) divided by 2

Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular.

Where is Leslie’s error?

Plants do not make their own food.
Plants are multicellular.
Plants are prokaryotic.
Plants do not have a nucleus.

5
What might you find inside a vaccine?

A species has homologous chromosomes. What does this say about the species?

A. It has alleles that control certain traits
B. It has pairs of matching chromosomes
C. Its a eukaryote and a haploid species
D. It has DNA that is made of of genes

33 indica si las siguientes frases son verdaderas o falsas y corrige las falsa A) la competencia es una relación exclusivamente interespecífica B )los parásitos pueden matar al huésped C ) las poblaciones gregarias son aquellas en las que existe una jerarquía entre los individuos D) en las poblaciones coloniales individuos de distintas especies crecen unidos entre sí E) En las relaciones de mutualismo y comensalismo una de las especies resulta indiferente a la relación F) La cooperación entre individuos beneficia tanto a estos como a la población G) La simbiosis es una relación beneficiosa para ambas especies

WHO CAN HELP ME WITH MY HOMEWORK ILL GIVE 50 POINTS AND BRAINIEST :COMMENT ME IF U WANNA HELP

Which of following are natural factors that can cause extinctions?


I. climate change

II. asteroid impacts

III. volcanic eruptions

IV. changes in oxygen levels in seawater

A.

I, II, III, and IV

B.

I, II, and III only

C.

II and III only

D.

I and IV only
i need help asap

Can you help me on these?

Which of these are long strands of DNA?
A. Chromosomes
B. Fossils
C. Genes
D. Mutations

Why does the amount of energy DECREASE as you move up the pyramid?


It is absorbed by the sun


It is lost as heat


The animal vomits part of it's food

What is the main function of the cell membrane of a cell?
A. to exchange nutrients and the cells waste with the external environment
B. to limit the size that cell can reach
C. To organize the cell's internal contents
D. to protect the cell from harmful substances in the environment

i think this is pretty easy so fill in the blanks and i’ll give you 15 points

In ecology, what is meant by the term "community"?​

in The US- Which states had the clearest skies

Which resource is a renewable resource?
A. Coal
B. Gemstones
C. Metal
D. Trees

The image shows barrels containing toxic waste that were dumped into a body of water. What is the likely effect of the dumping on this ecosystem?

What is the most common element found in the composition of minerals?

4. What are the first organisms (colonizers) on the land? *
O
Flowers
Ants
Lichens & mosses
O
Oaktree
Submit

During photosynthesis blank energy is converted into blank energy

What are the possible anticodons in the tRNA molecules that carry serine to the ribosome?

Why is the nitrogen cycle important for the survival of organisms in an ecosystem? A. The nitrogen cycle recycles nitrogen through an ecosystem, making it available to all organisms. B. The nitrogen cycle keeps organisms from consuming nitrogen in their ecosystem. C. The nitrogen cycle allows all organisms in an ecosystem to consume nitrogen instead of consuming each other. D. The nitrogen cycle stores nitrogen in safe places, keeping it from entering an ecosystem.

WHY is this football player wearing an oxygen mask? what is the importance of oxygen here? What is he trying to avoid by wearing the oxygen mask?

What use proteins to diffuse materials across the cell membrane?

The cardiovascular system includes all of the following EXCEPT?
A.
Veins
B.
Arteries
C.
Capillaries
D.
Neurons