Biology High School




When a chemical change occurs, the identity of matter does not change.
True or False?


Answers

Answer 1

Answer:

true because matter can't dissapear or be created

Answer 2

Answer:

False

Explanation:  Chemical changes are changes that occur when one substance is turned into another substance. The particles of one substance are rearranged to form a new substance.

Related Questions

What type of evolutionary mechanism did this story show?

Answers

Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool. Two of the most relevant mechanisms of evolutionary change are: Natural Selection and Genetic Drift.

This story showed an example of convergent evolution. Convergent evolution is the process whereby organisms that are not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.

What is in the story ?

In this story, the two species of birds, the crows and the jays, evolved to look similar as a result of living in the same environment and competing for the same resources.

The two species evolved to look similar in order to blend in with their environment, making it difficult for predators to distinguish them from one another. This allowed them to survive and thrive in the same environment.

Therefore, This example of convergent evolution is a perfect example of how species can evolve to look similar in order to survive in the same environment. It also shows how competition for resources can drive species to evolve similar traits in order to survive.

Learn more about  convergent evolution   at:

https://brainly.com/question/30637872

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Explain the difference between homology and analogy using a wolf, a whale, and a shark:

Answers

Answer:

Explanation:

Analogy refers to traits or structures like body shapes, fins which evolved independently that are similar in organisms that are not related by the same common ancestor. For example dolphins and shark have similar body structures like fins but they are unrelated. Whale and shark too. Whales are mammals, sharks are fish.

Homology refers to traits or structures

posses by organisms that are related by common ancestors. Example wolf and whales.....they are both mammals.

Does the distance from earth to sun determine the seasons? please explain

Answers

No it’s the way the earth is rotating

Answer:

nope

Explanation:

Contrary to popular belief, the seasons are not determined by the earth's distance from the sun. The seasons are actually caused by the earth's tilted axis. Because the axis is tilted, when the Northern Hemisphere is tilted towards the sun, it's warm.

hope this helps:)

Many freshwater plants have adapted to low carbon and light levels by adapting what feature?

Group of answer choices

Carnivorous plants

No need for carbon dioxide

Camouflage

Floating leaves

Answers

Answer:

The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.

what are the different cellular organelles​

Answers

Answer:

Plasma membrane, nucleus, ribosomes, mitochondria

Explanation:

Plant cells have some organelles that animal cells do not. Check all organelles that ONLY plant cells have.

A
chloroplast
B
nucleus
C
cell membrane
D
cytoplasm
E
cell wall
F
mitochondria

Answers

Answer: Plant cells only have chloroplast and a cell wall. Which is A and E.

Is Earth always the same distance from the
Sun? Explain.

Answers

Answer:

No

Explanation:

The earth travels in an ellipse, an ellipse is a flattened circle, and the sun is closer to one end of that ellipse and far in another end. That said the Earth is not the same distance as the sun

Which of the following statements are true regarding cellular reproduction? Select all that apply.
When an organism grows, cellular reproduction creates new cells.
Organisms reproduce, so new cells are needed.
If cells become damaged, cellular reproduction can repair damaged cells.
Cellular reproduction helps organisms acquire water better, as there are more cells present.
Cellular reproduction is the exchange of homologous chromosome segments.

Answers

Replacing dead cells

Answer: Replacing dead cells

How could an asteroid impact have led to the extinction of dinosaurs?

Answers

Answer:

The asteroid crashed into the earth and made some water bodies violent

it is said that the asteroid was super huge and was capable of causing volcanoes, tsunamis, etc which took place all over the earth and extincted dinosours. But it is a little surprising that crocodiles who were also found at that time survived all this

Answer:

Probably the asteroid caused natural calamities

More than 90% of measles infections occurs in children under ____ years old.

Answers

Answer: More than 90% of measles infections occurs in children under 15 years old.

Hope this helps

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Which characteristics are common to most salamanders? Check all that apply.

They undergo internal fertilization.
They lose their tails as adults.
They have wet, moist skin.
They have long, strong legs.
They begin life with gills.

Answers

Answer:

c, d, and a

Explanation:

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Answer:

They undergo internal fertilization; they have wet, moist skin; they begin life with gills

Explanation:

At which latitudes do we find Earth's major deserts?

Answers

Answer: Around 30-50 degrees of latitude. This is roughly right above and below the equator.

around 30-50 degrees
Other Questions
The school band is selling t-shirts for a fundraiser. The initial cost for a steamer to apply the decals is $100. It is predicted that the cost of material for each shirt is $12. The function that shows the band's average cost per t-shirt after x t-shirts are sold is: i make games check me out https://www.freeriderhd.com/u/thecoykid click on created tracks and then click on a game to playwho ever tells me how they are AND plays them gets brainliest Urgent please help.. 4. What are the traits of a good follower? a) The regular price of a T-shirt is $18. What is the discounted price? b) If the regular price of an item is x dollars, what is the discount price in dollars? c) The discounted price of a hat is $18. What is the regular (original) price? help fast!!! 2) The bicycle shop charges $15 plus $6.50per hour to rent a bike. How many hoursdid Henry pay to rent the bike if he paidthe shop $327? Which sentence from the passage best describes a conflict in this passage? As soon as Curtis woke up, he knew something was wrong. His face seemed like it was on fire and itched something awful! He jumped out of bed and rushed to the bathroom and splashed water on his face, but it really didnt help. He looked closely in the mirror, and the whole right side of his face was red. Alarmed, he yelled for his mother, who rushed into the bathroom. Whats wrong? she asked. Why are you screaming? Look at my face, Curtis said and turned to her. His mother put her glasses on and bent down to examine his face. She touched the red area and pushed his hair back. It itches like crazy, he said. She turned his head to one side so the light was better and touched the red area again. Try not to scratch it, she said, thatll just make it worse. Dont you have something you can put on it? Come into my bathroom, and Ill put some lotion on it, she said. The lotion helped a little; at least Curtis didnt feel like he wanted to scratch his face off. What do you think it is? he asked his mother. Well, it looks like something bit you, she said, maybe a spider. In my bed? he asked and shivered involuntarily. Maybe, but werent you and Trevor playing in the woods yesterday? she asked. Thats right, we were, but nothing bit me. She turned his face to get a better look. Whether it was in the woods or in your bed, something definitely bit you right there on your cheekbone, she said. I can see the mark clearly in this light. Were going to have to take you to the clinic. But I have school today, and I havent missed school all year. Cant I go to the school nurse? I think the lotion is really working, he added hurriedly. This last statement was not really true as his face was still hot and itchy, but Curtis was determined to get a perfect attendance award at the awards assembly in May. Id feel better if Dr. Cline looked at it. She can recommend a skin cream that will help you feel better. Go get dressed while I call the clinic. Maybe they can see you first thing and you can go to school a little late.A. "He looked closely in the mirror, and the whole right side of his face was red." B. "She touched the red area and pushed his hair back." C. "The lotion helped a little; at least Curtis didn't feel like he wanted to scratch his face off." D. "She turned his head to one side so the light was better and touched the red area again." If a dramatic scene in a movie had a long and very significant conversation between two characters, what would probably be the best way for a film editor to edit it? A.focusing on the face of one character throughout the entire scene to show which character is more important B.quick shots of each character to highlight drama C.long-lasting shots of the characters as they speak to highlight the importance of their conversation D.a shot of an unimportant object nearby the whole scene to highlight the importance of their conversationPlease HURRY !!! and THANK YOU!! 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