Answer:
Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen. Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass.. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 and trace gases.
Explanation:
Choose one other region. Describe how that area will be affected by climate change
Answer:
When the global temperature changes, the changes in climate are not expected to be uniform across the Earth. In particular, land areas change more quickly than oceans, and northern high latitudes change more quickly than the tropics, and the margins of biome regions change faster than do their cores.
I hope it's helpful!
When blood is flowing through a vena cava, which main blood vessel will it flow through next?
A hepatic portal vein
B hepatic vein
C pulmonary artery
D pulmonary vein
Answer:
C.
Explanation:
When the ventricle is full, the tricuspid valve shuts. This prevents blood from flowing backward into the right atrium while the ventricle contracts.
As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs, where it is oxygenated.
when does a seed become a seedling?
a. when it has roots
b. when a flower forms
c. when photosynthesis begins
d. when a stem forms
Answer:
when the photosynthesis begins
PLEASE HELP i need this fast i will give BRAINLIEST
Answer:
1 is
Explanation:
no. 1 is water cycle
no.2 is food chain
no.3 is carbon-oxygen cycle
no.4 is mineral cycle
What best explains why, in early spring, ice remains longer on Lake Erie than on the surrounding land areas when the air temperature is above freezing?
Answer:
Because the water-specific heat is much higher than land specific -heat.
Explanation:
When water solidifies due to the temperature descent, it forms hydrogen bridges between water molecules, separating them from each other. This is the reason for water expansion during the freezing process. To go back to the liquid state, and break down the hydrogen bridges, too much heat is needed. This means that water has high water-specific heat.
Water-specific heat is the amount of energy in the form of heat needed to raise the temperature of one gram of water one degree Celsius.
Due to its high specific heat capacity, water reduces the temperature changes. For instance, when we are at the river or sea, during sunset, it gets colder because the sun is not heating directly the earth anymore. However, if we touch the water it seems to be warmer. This is because the water calorific capacity is about five times higher than the sand calorific capacity. The land gets colder faster than the water.
In the same way, when a water body such as a lake is frozen, and there is also ice on the land surface surrounding the lake, and the environment rises its temperature, first the ice on the land defrost and then, after a certain lapse of time, the ice of the water surface also defrosts.
The four types of moveable joints are hi nge, ball-and-socket, pivot, and ____________________________.
rotating
gliding
sinking
floating
Answer:
answer is gliding joint
When iron in the rock or steel rusts, it’s taking some of the iron and turning it into iron oxide. Bill Nye says it’s ____________________ erosion.
is oxidation reaction
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
Explanation:
They showed that adult cells could be reprogrammed to become cells with the properties of an embryonic stem cells
Answer: Kathrin Plath and William Lowry
Explanation:
Kathrin Plath and William Lowry and researchers at the University of California in Los Angeles(UCLA) were able to reprogram adult cells to become develop properties of embryonic stem cells which are very important as they can become any type of cell in the body which can have very important implications in medicine.
They did this by genetically altering the cells to enable them age backwards to a point where they were like the aforementioned stem cells.
2. Explain how similar and different sexual reproduction in plants and animals is?
Answer:Both plants and animals reproduce sexually, producing a male and female gamete, which fuse to form a zygote. However, plants are also able to reproduce asexually, unlike most animals. ... In sexual reproduction in animals, the two gametes are the spermatozoa and the oocyte, which when fused become the ovum.
Explanation:
If a parent cell has 20 chromosomes, how many daughter cells will it have if the cell divides by Mitosis?
Answer:
After mitosis, the daughter cell has 20 chromosomes and after meiosis, the daughter cell has 10 chromosomes.
Answer:
10 chromosomes
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Conclude: An organism that breaks down organic matter into simpler materials (like carbon dioxide) is called a decomposer. Decomposers absorb nutrients from living things or the organic matter they leave behind. They do not need to kill to get their food.
Do your results suggest bears are decomposers? Explain your reasoning.
Answer:
No, because bears kill to get their food. They eat fish and they kill the fish to get them. If they left the fish carcass, decomposers would eat it. The bear makes the food for the decomposers, but it is not a decomposer itself... Does that make sense?
The two birds shown in Figure A and B are found on one island. The bird species in figure A is moved to a new island, where food size and shape are different from the food found in their current island. The birds left behind (Figure B) on the original island continue to grow and reproduce.
What changes might a scientist expect to see in the species?
A.
The birds on the old island would not change over time and evolve.
B.
The birds on the new island would evolve over time and die out.
C.
The birds on the old island would evolve over time and develop adaptations in their beaks to allow them to eat new types of food.
D.
The birds on the new island would evolve over time and develop adaptations in their beaks to allow them to eat new types of food.
Answer:
D.
Explanation:
because if the birds in figure A move to the new island with new food size and shape they will adapt to the food
What phases do cells go through during meiosis?
Explanation:
Since cell division occurs twice during meiosis, one starting cell can produce four gametes
hope this helps
a Male peacock display his tail as a part of a what display
Answer:
I think it's to impress a female peacock.
Please help me I can’t fail please fast
Answer:
C
Explanation:
Spores are single-celled and seeds have multiple cells
while all zebras have stripes, no two zebras share the same stripe pattern
Answer:
correct?
Explanation:
Haploid sperm and egg are produced via meiosis. What process is responsible fro producing the 2N zygote?
A. Differentiation
B. Fertilization
C. Replication
D. Transcription
Answer:
Explanation:poda
Answer:
c
Explanation:
Identify and explain at least five ways you can apply the concept of
the cell cycle in your own life.
Answer:
Growth of existing cells in G1
Creating replacement cell for expired cells (apoptosis)
Repair of damaged tissues
Regulates body cells to maturation
Prevents out of control cell cycle leads to cancer
Slowing the reproduction of some cells such as neurons G0
Producing identical cells to the one that already exist to maintain shape, structure and functions of cells in the human body
Explanation:
why does animal viruses affect only animal but not to the plants?
When a cell exits the cell cycle and no longer goes through cell division, the cell enters into the __________________ phase.
Answer:
Anaphase
Explanation:
It is what it is
How are the circulatory systems in animals and plants alike?
A- Their circulatory systems move blood throughout the organism
B- Their circulatory systems transport nutrients to cells
C-Both plants and animals have a pulmonary circuit
D- All plants and animals have a heart
Answer:
I think B
Explanation:
The circulatory system is the method of transport in plants and animals. Animals must have nutrients and oxygen reach every cell in their body. Plants must have nutrients and carbon dioxide reach every cell in their "body." The circulatory system is how these things are carried around the living organism.
Explain the difference between homology and analogy using a wolf, a whale, and a shark:
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.
4. Why does semen contain fructose?
A. Fructose breaks down to provide energy for the penis.
B. Fructose travels with the sperm to feed the egg before it is fertilized.
C. Fructose feeds sperm, enabling them to survive long enough to fertilize an egg.
D. Fructose provides energy for the development of the fertilized egg.
I’ll give brainiest:)
Answer:
The answer is C
Explanation:
I just got it right on the quiz
Fructose feeds sperm, enabling them to survive long enough to fertilize an egg.
Semen contains fructose because it feeds the sperm, enabling them to survive long enough to fertilize an egg. Therefore, the correct answer is option C.
What is fructose?Fructose is a type of sugar that provides energy to the sperm as they travel through the female reproductive tract in search of an egg to fertilize. Sperm have a limited lifespan outside the male body, so it is essential that they are supplied with enough energy to reach and fertilize an egg before they die.
The fructose in semen provides this energy to the sperm, allowing them to survive and swim towards the egg. Once inside the female reproductive tract, the fructose is absorbed by the sperm and used to fuel their movement towards the egg. Without the fructose in semen, the sperm may not have enough energy to reach the egg and fertilize it.
Learn more about semen, here:
https://brainly.com/question/14353013
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If the concentration of sugar is 1% OUTSIDE the cell and 5% INSIDE the cell, which of the following will occur by osmosis?
water will move out of the cell
sugar will move out of the cell
sugar will move into the cell
water will move into the cell
Answer:
the answer is water will move out of the cell
Heriberto wanted to compare the gravity on the moon to the gravity on earth which statement below is correct
This question is incomplete; here is the complete question:
Herberto wanted to compare the gravity on the Moon to the gravity on Earth. Which statement below is correct?
The gravity on Earth is less than the gravity on the Moon.
The gravity on Earth is greater than the gravity on the Moon.
The gravity on Earth is equal to the gravity on the Moon
The gravity on Earth is the same as the gravity on the Moon.
The correct answer is The gravity on Earth is greater than the gravity on the Moon.
Explanation:
One of the factors that most affect the gravity (the force that makes objects move towards the center of a body) of planets like Earth or smaller bodies such as the moon is the mass. Indeed, if the celestial body is more massive or contains more mass the gravity force is stronger. Now, the mass of Earth is higher than the one of the moon. This makes the gravity of the moon weaker. Indeed, the gravity on Earth is 9.8 meters per square second, while the one in the moon is 1.62 metes per second, which is about 1/6th of the gravity on our planet.
4. In which layer do most (90%) of rainforest organisms live?
A. Emergent layer
B. Canopy layer
C. Understory
D. Forest Floor
Which type of organism would MOST likely benefit directly from increased levels of CO2?
- fish
- bird
-tree
- mushroom
Answer:Im pretty sure its a tree or mushroom
Explanation:
The study of microorganisms is called microbiology.
The correct answer to the question is option D which is mushroom.
What is anaerobic respiration?Anaerobic respiration is respiration using electron acceptors other than molecular oxygen.Although oxygen is not the final electron acceptor, the process still uses a respiratory electron transport chain.According to the question, the fungi are saprotrophic species and an increased level of CO2 will help them to grow.
Hence, the correct answer is option D.
For more information about anaerobic respiration, refer to the link:-
https://brainly.com/question/14688752
Awarding 50 points and brainliest answer
Label the microscope!
A
B
C
D
E
F
G
A- stage clip
B- coarse focus
C- objective lens
D- stage
E- Condenser + Diaphragm
F- condenser focus
G- Light source/Mirror
PLEASE HELP(this question has been asked a lot of times by other people with no good answers.)
1. Which of the following statements about classification of organisms is true?
A: Phylogenetic classification uses genetics and ancestral relationships to classify organisms.
B: The Linnaean system of classification takes into account ancestral relationships between organisms
C: Linnaeus concentrated on the genetic characteristics of organisms to classify them.
D:In phylogenetic classification, the group that organisms are put into is called a taxon.
Answer:
Phylogenetic classification uses genetics and ancestral relationships to classify organisms.
Explanation:
took the test
The correct option is (a) Phylogenetic classification uses genetics and ancestral relationships to classify organisms.
Phylogeny classifies species based on evolutionary kinship or evolutionary distance (taxonomy). The degree and type of evolutionary distance between organisms determines their phylogenetic connection. Let's define taxonomy in order to better comprehend this idea.The connection between classification and phylogeny?The study and comparison of traits as well as the comparison of groups of organisms are the foundations of both phylogeny and categorization. However, there is a distinct feedback between character interpretation and inferred phylogeny, which is seen in the weighting of the characters used to construct the classification.
Learn more about classification and phylogeny brainly.com/question/16452940
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A chemical which consists of just one kind of atom is always:
a molecule
an element
a mineral
a rock