Answer:
Cigarette smoking is the number one risk factor for lung cancer. In the United States, cigarette smoking is linked to about 80% to 90% of lung cancer deaths.
Explanation:
Winds are generated by changes in air pressure and temperatures locally.
A. True
B. False
Answer:
A
Explanation:
Wind pressures change the directions and generate new winds. The Sun can also affect this in a way
Need help with this question!
Answer:
i think is the second one
Four substances are important for both photosynthesis and cellular respiration: oxygen, glucose, carbon dioxide, and water. What is the best explanation for how both processes use these substances?
Answer: D
Explanation:
Answer:
D
Explanation:
i took the test
The Earth's atmosphere is made up
of
A. all life on Earth including plants, animals, and
people
B. all the air that is in the sky; mostly nitrogen and
oxygen
C. all of the water on Earth including oceans, rivers,
lakes, streams, and ponds
Answer:
b
Explanation:
PLEASE HELP, will mark brainlest, to who answers with the correct answer
What is some BIOLOGICAL EVENTS.
Answer:
A bioevent or bio-event (a shortening of 'biotic event' or 'biological event') is an event recognised in a sequence of sedimentary rocks, where there is a significant change in the biota as recorded by assemblages of fossils over a relatively short period of time.
Explanation:
1.According to Greek legend the war between the Greeks and the people of Troy was a long and bloody one. And at the center was Helen, the most beautiful woman in all of Greece. And Paris, the Trojan prince who loved her. PLZ HELP ME THIS IS A GRADE!!
PLEASE HELP ME! ILL MARK BRAINLIEST!
Answer:
ExplanationA coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
15.
An object with a mass of 20.0 kg has a force of 5.0 newtons applied to it.
What is the resulting acceleration of the object?
Answer:
0.25m/s2
Explanation:
Force = mass x acceleration
5 = 20 x a
a = 5 ÷ 20
= 0.25m/s2
What is the difference between a substrate and an active site?
Answer:
a reactant in a chemical reaction is called a substrate when acted upon by enzyme. an active site is the part of an enzyme to which substrates bind and where a reaction is catalyzed. :)
help
i can have fun with my friends
Hiiii!
I'm so glad you choose brainly to ask your question at! Unfortunately, you did not include enough information for other users to answer it. Re-submit your question and make sure to include enough details so that others may answer it.
`Mack`
Need help ASAP!
What does reproductive isolation do within a species cause
A. An increase in gene flow.
B. An increase in genetic drift,
C. A decrease in gene flow.
D. A decrease in genetic drift.
please help y'all 15 pts!
Answer:
C
Explanation:
Because you see a fish and some leaves, you can conclude that the ocean went away and the trees grew.
Which of the following best defines the cell level of organization?
Choose the correct statements 1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. 3cross-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 4.Self-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Answer: The correct statements are 1 and 2:
1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Explanation:
Pollination is the transfer of pollen grains from an anthers to a receptive stigma. In most species of flowering plants, external agents bring about pollination. Also, flowers have evolved special structures and mechanisms to ensure successful pollination.
There are two types of pollination
--> Self pollination: This takes place when mature pollen grains from the anther of a flower fall on the stigma of the same flower or that of another flower on the same plant. This type of pollination brings the male gametes and egg cells of the same plant together. The resultant offspring show very little genetic variation.
--> Cross pollination: This occurs when mature pollen grains of a flower are transferred to the stigma of a flower of another plant of the same or closely related species. This brings the male gametes and egg cells of two different parent plants together. Therefore, there is greater genetic variation among the offspring.
PLS ANSWER WILL GIVE BRAINLIEST
chemical process of breaking large molecules in food into smaller molecules
Answer:
digestion
Explanation:
breaking down of food particles into smaller substance is known as digestion.
Ferns and moss plants grow from_________?
Answer:
mosses and ferns plants are two types of primitive plants both plants are non flowering plants
Explanation:
therefore both of them are seedless plant as well both moss and ferns under grow Alternatives of generations
If a person is breathing normally, which of the following could prevent him from using his body to exercise normally?
not eating enough food, because cells need molecules from both food and air to work
nothing, because he would be able to exercise normally as long as his cells are getting molecules from the air
not getting enough sleep, because the body only makes energy for exercise while asleep
not getting enough sunlight, because cells need sunlight to function
Answer:
Not eating enough food, because cells need molecules from both food and air to work.
help quick pleaseeeeeeeee
Which statement best describes the result of meiosis?
A.
It produces body cells.
B.
It causes alleles to deform.
C.
It prevents genetic mutation.
D.
It produces reproductive cells.
Answer:
It's D
Explanation:
Which biomolecules do not function in supporting a cell?
A Lipids
C Amino acids
B Nucleic acids
D Carbohydrates
A student combined baking soda and vinegar. Is this an example of a chemical reaction? Use evidence and scientific reasoning to support your claim.
Answer:
It is not a chemical reaction, because you can still separate it, meaning it is a physical change. Also it did not make a new substance, burn, or rot also making a physical change.
Explanation:
Sorry if wrong
Q.18. During which period did the first trilobites appear?
a) Cambrian
b) Devonian
c) Silurian
d) Ordovician
Answer:
a) cambrian
Explanation:
The first body fossils of trilobites appeared in the Early Cambrian Period, about 540 million years ago.
Answer:
A. Cambrian period
Hope this helps :)
Why did the color of the peppered moth change?
The moths’ life cycle changed.
The environment changed.
The amount of variation in the moth population changed.
The number of individual moths in the population changed.
Answer:
The environment changed.
Explanation:
Hope this will help
Answer:
The environment changed.
Explanation:
I took the test and I got it correct
Is Salmonella maintaining? Why or why not? Plz help
Answer and explanation:
No, because most people are infected with salmonella by eating foods that have been contaminated by the s-word. Since our society is much more industrialized, we are cleaner when it comes to making food. Salmonella is mostly found in dirtier countries such as third world countries. Obviously, other food-borne illnesses are out there, but salmonella is not as common anymore, since we are improving.
True or False: A karyotype is a map or
picture of all your chromosomes.
Answer:
true i believe
Explanation:
NEED HELP ASAP 15 POINTS
what does it mean, Genotypically and Phenotypically, to be a worrier or warrior
Answer:
genotypically The genetic makeup, as distinguished from the physical appearance, of an organism or a group of organisms. 2. The combination of alleles located on homologous chromosomes that determines a specific characteristic or trait.
phenotypically The physical appearance of an organism as distinguished from its genetic makeup. The phenotype of an organism depends on which genes are dominant and on the interaction between genes and environment.Explanation:
Atomic energy is produced from changes within the_____
of an atom.
1. Protons
2. Neutrons
3. Orbitals
4. Nucleus
Answer:
I believe it is the Nucleus
Explanation:
5. How are matter and energy cycled between plants and animals? How can you
apply this information to help you determine what is going wrong in the
greenhouse?
Answer:
Plants and animals get their energy in different ways by creating photosynthesis in able to obtain energy, while animals get energy from consuming waste and other organisms.The food of almost any kind of animal can be traced back to plants. ... Matter cycles between the air and soil and among plants, animals, and microbes as these organisms live and die. Organisms obtain gases and water from the environment and release waste matter (gas, liquid, or solid) back into the environment.
Explanation:
Which physical structures are present in amphibians, but not in reptiles, when they first hatch?
scales and fins
scales and lungs
gills and fins
thin skin and lungs
Answer:
gills and fins
Explanation:
True or false?
Submersibles make it possible for scientists to collect data from areas of the ocean that were previously unreachable.
Answer:
The answer is true :)
Would you mind marking me Brainliest?
Much love <3
Explanation:
Explain how vaccination protects a child against a viral disease.
Answer:
Explanation:
It doesn’t is actually makes u sick sometimes but if u agree then vaccinations mean when only a bit of the pathogen is ingested into to u for ur body to become immune and so if u get the disease yours body has already made antibodies which contain a special format in which they break down the pathogen faster.and the pathogen will be broken down quickly as the process is faster when your body already contains the code against it.