Answer:
c: Single-celled organisms released oxygen into the air when they photosynthesized.
Explanation:
got it right on edge. also if there were no oxygen animals and humans could not live
The event in Earth’s history that most directly allowed life to exist on land is "Single-celled organisms released oxygen into the air when they photosynthesized." Thus, the correct option is C.
What are Single-celled organisms?Single-celled organisms may be defined as those organisms that are constructed by only one cell. This single cell carries out all of the functions needed for the organism. They lack compartmentalization.
Single-celled organisms mainly bacteria evolve themselves in such a way that they released oxygen into the air when they photosynthesized. Such bacteria are known as photosynthetic bacteria.
These bacteria are only the source that brings this diversity among living entities on the earth's surface by making the availability of oxygen on this planet.
Therefore, the correct option for this question is C.
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Harvey mixes two liquids. Which observation of the new mixture most likely indicates a precipitate is forming? a cloudy appearance a bubble formation a change in color a change in odor
The appearance of a precipitate in an aqueous phase reaction is easily signaled by a cloudy appearance of the reaction mixture.
A precipitate is formed when reaction between two aqueous reactants yields an insoluble product. That insoluble product is referred to as a precipitate. Usually precipitates are formed during double decomposition reactions.
When a precipitate is formed, we can easily observe it from a cloudy appearance of the reaction mixture.
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When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity?
Answer:
Tissue
Explanation:
Multicellular organisms are complex and every complex organism consist of building blocks. This is the case in the level of organization in living organisms. All living organisms are made up of CELLS. In multicellular organisms i.e. more than one, the cells that perform a similar role come together to form the TISSUE.
Tissues with similar function together forms the ORGAN. Organs that perform similar functions collectively makes up ORGAN SYSTEM. Based on this, the level of organization moves from the least complex "cells" to most complex "organ systems".
The order is as follows:
Cell-----> Tissue-----> Organ-----> Organ systems
Why does an animal inhale?
A) To get rid of cellular waste like oxygen from the body.
B) So cells can use the oxygen in the air to produce energy.
C) To get rid of cellular waste like carbon dioxide from the body.
D) So cells can use the carbon dioxide in the air to produce energy.
Under what condition will diffusion take place most rapidly?
Answer:
From my opinion it would be:
Temperature: Molecules, like practically everything else you can think of, tend to diffuse faster as temperature increases, as this increases the random collision between molecules and increases the rate of diffusion.
Explanation:
Hope it works out !!!What is one of the main functions of the large intestines?
break down food chemically
break down food physically
absorb nutrients
absorb water
Answer:
absorb water and mineral salts.
Explanation:
Answer:
D. absorb water
What's the capstone project?
is it important?
Answer:
A capstone course, also known as capstone unit or a senior thesis or senior seminar serves as the culminating and usually integrative experience of an educational programtion A capstone project plays a vital role in preparing a student for the future course of learning. It gives students a chance to retain whatever they have been learning during their college studies and apply it once they pursue a specific academic profession in the college.
A capstone project is a culminating academic undertaking that often marks the final contribution or achievement in a student's academic career. It is often undertaken in the final year of a programme, such as a bachelor's or master's degree. The importance of a capstone project can be significant for several reasons:
Integration of KnowledgePreparation for the WorkforcePortfolio PieceAssessment of Learning OutcomesThe details of the capstone project vary according to program requirements, institution and subject of study. A capstone project's ability to integrate and apply the knowledge, abilities and concepts acquired during the academic program determines its importance. It gives students the chance to demonstrate their understanding, critical thinking, problem-solving and research skills in a practical setting. Research, data analysis, problem-solving, and the creation of useful results or products are often components of capstone projects.
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Why doesn’t urine flow back to the ureters?
Answer:
With vesicoureteral reflux, urine flows backward from the bladder, up the ureter to the kidney. It may happen in one or both ureters. When the "flap valve" doesn't work and lets urine flow backward, bacteria from the bladder can enter the kidney. This may cause a kidney infection that can cause kidney damage.
what is the phenotype of blood type a
Answer:
Type A's phenotype would not be much different than that of the other blood types. However, its genotype is either AA or Ai
Explanation:
Answer:
The phenotype is A and genotype is IA IA or IA i
Explanation:
How is a brain injury classifled ?
Brain injury classified as an injury of the central nervous system.
Give two examples of pseudo coelomate animals.
Answer:
Roundworm & Taridgrade
Explanation:
bruh
Answer:Nematodes,Rotifers
What could be a good affect of a mutation?
Answer:
D. more variety in population
If the population of rabbits in this ecosystem decreased dramatically because of certain environmental changes, which organisms’ food supply would decrease?
A.
owl and snake
B.
jackal and wildcat
C.
green plant and mouse
D.
goat and wildcat
Answer:
A. Owl and Snake
Explanation:
A green plant cannot eat a rabbit. Neither can a goat.
B. could be the answer but I believe that A. is the answer because I'm positive that those animals eat rabbits.
Hope this helped :)
The expansion of the ranges of tropical fish was most likely caused by-
A. agricultural runoff that contributes to dead zones in the ocean
B.global droughts that raise the salt concentration of ocean waters
C.the rising temperatures of ocean waters
D.acid rain pollution that lowers the pH of ocean water
Answer:
C
Explanation:
The expansion of the ranges of these fish was most likely caused by the rising temperatures of ocean waters. This is because these types of fishes live in both fresh-water and salt-water but only in aquatic tropical environments around the world. The increase in temperatures of ocean waters has provided more suitable habitats for these fishes to expand to.
Predation is responsible for the _________ we see in modern organisms.
evolution
co-evolution
nutrients
adaptations
How does exercise affect heart rate of 9th grade student?
we set up an experiment testing different lengths of time of exercise (minutes) on the
heart rate of students
Continents are found in the continental crust. True or false?
Answer:
true (more info below)
Explanation:
The continental crust is a sheet of granite, sedimentary and metamorphic rocks that surround the continents and the shallow seabeds near their coasts, known as the continental shelves. This is less thick than the substance of the mantle of the Planet, which therefore "floats" on top of it.
hope this helped!
Select all the correct answers.
Which of the following organisms can have all of the energy it uses to move, grow, and survive traced back to radiant energy from the Sun?
a tree
a human
a flower
a bacterium
a fish
Answer: A. ,C.
Explanation: It's in the food chain and constantly need's water.
The correct answers are:
A treeA flowerA bacteriumA fishWhy organisms need sunlight?All of these organisms can have all of the energy they use to move, grow, and survive traced back to radiant energy from the Sun. Trees and flowers undergo photosynthesis to convert sunlight into energy in the form of glucose, which they use to grow and carry out metabolic processes.
Bacteria can also undergo photosynthesis, or they can use organic matter as a source of energy, which ultimately comes from the Sun through the food chain. Fish, as well as other animals, obtain their energy by consuming other organisms that have obtained energy from the Sun through photosynthesis or other means.
Humans are also ultimately dependent on the Sun's energy, but they obtain their energy indirectly through the food they consume, rather than directly from photosynthesis.
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i realllyyyyy need help right now. it’s due it 30 mins!!
if anyone is good at science. please help
it’s on genetics
Answer:
LL
Explanation:
Answer:
1st Q A: LL
2nd Q A: A spotted coat
help me with those questions please!!
Explanation:
5=noble gases
6= 6 valences( not entirely sure though)
sorry
Answer: Noble gases
There is no answer since it's stable
Due to increase in the number of electrons occupied in the energy level s
V
Explanation:
An allele that expresses itself in a heterozygote is a(n)
A. recessive allele
B. allele pair
C. dominant allele
What does the writer use to help readers understand
the sequence of steps?
What should the writer add when verbally presenting
the procedure to a group?
cup
How to Make Slime
For a fun activity, try making slime. You will need a 3-
quart mixing bowl, a tablespoon, 1/2 cup of shampoo, 1/4
of cornstarch, and 6 tbsp water.
Combine 1/2 cup shampoo and 1/4 cup
cornstarch in mixing bowl.
Add 1 tbsp water and stir.
Mix in 5 tbsp of water, one tablespoon at a time,
stirring well after each addition.
Answer: the numbered list and a demonstration
Explanation:
yethirrrr got it right
Answer:
1) A numbered list
2) A demonstration
Explanation:
Do people with AIDS make antibodies?
Answer:
Yes, people with aids do produce anti bodies.
Explanation:
People who have HIV produce special antibodies that enable them to suppress the virus.
What is happening within the moon jelly population when the size of the moon jelly population is stable.
Answer:
The jelly is able to hold the weight of gravity
Explanation:
To reproduce, organisms need to release energy from energy storage molecules. If there are more energy storage molecules available to the moon jellies, they can reproduce more, resulting in more births. Fewer deaths would also cause the jelly population to increase.
What are moon jellies made of?The moon jelly is one of the most common jellyfish in Rhode Island. Its body shape resembles an umbrella, with four equal-sized horseshoe-shaped gonads in the center of its body. Moon jellies are made up almost entirely of water and will not hold their shape when out of the water.
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3. Photosynthetic organisms such as plants, algae, and some bacteria and archaea can convert solar energy into ___________.
A. Nuclear energy
B. Potential energy
C. Kinetic energy
D. Chemical energy
What could its hardness be if it can scratch a quartz mineral?
Any mineral with a Mohs hardness of 7 or greater could scratch quartz. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10).
hey um hopes this helps please try to answer my newest question please
Answer:
7 Hardness of a quartz mineral
Explanation:
Answer:
Orthoclase feldspar mineral is 6 percent hardness
Quartz mineral is 7 hardness
Topaz mineral is 8 hardness
Corundum mineral is 9 percent hardness
So you are asking for the hardness if it can scratch a quartz mineral. The answer is that Quartz mineral is 7 percent hardness if it can be scratch.
Key words:
1: Mineral
2: Hardness
Hope this helps.
Someone help me :)
What are enzymes? (Check all that apply)
Proteins
Antibodies
Hormones
Catalysts
Fats
Chains of amino acids
None of the above
Answer:
biological molecules biochemical reactions
Answer:
Here it is
Explanation:
When a flower is in bud it is protected from _____.
Growing food in urban areas could improve full security worldwide
Answer:
yes i hope that helps
ok
Which of the following is NOT stored in the bone?
Bone Inside
A.
calcium
B.
fat
C.
minerals
D.
water
Answer:
water
Explanation:
What are the components needed for a full ecological community to be successful?
Answer:
Explanation:
A community structure is define by the diverse organism present and the various number of species.
A community requires both biotic and abiotic factor to form a good structure.
Base population is needed - this are the primary producer, that transfer energy to other organism in the environment. The produce their food themselves.
Consumers - consumers feeds on producers, herbivores animals feeds on producer/plant while carnivores feeds on herbivores. Energy is then transfer when they chemical reaction takes place via the food comes
Decomposer - They act on the dead and remains of plant and animal. They help release nutrient back into the soil. Example of decomposer is earth worm.
