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Explanation:

Humans use their lungs to inhale oxygen from the air. But worms, fish, crabs and other underwater animals use gills to get oxygen from the water. As water moves across an animal's gills, oxygen is removed and passed into the blood. Gills work better when there is more oxygen in the surrounding water.

Answer:

12 is c

Explanation:

Thats all I know

Answer:

A matrix organization is an organizational structure where employs gets a command from two or more chain of lines and report multiple boss or manager and able to perform various roles in various functions.

Advantages:

- effective use of resources according to the roles in the function

- motivational atmosphere by performing multiple roles

- improved skills like, decision making and taking the initiative

Disadvantages

- increase in internal complexity and confusion

- increase in internal conflict due to multiple reporting lines.

- competition or ego clashes

Explanation:

Poland

Switzerland

They decreased

It stays relatively the same

Answer:

I'm not sure have you tried to or attempt it

Answer:

The correct answer is E

Explanation:

I had the question in usatestprep

Answer:

in 40 days food is enough for 30 students

in 1 day food is enough for = 40×30

in 100 days food is enough for 40×30=100

= 12 students

all living things can be organized into different levels. organelles are suspended in cells that make up tissues, which then make up organs. these can be grouped into organ systems within whole organisms.

however, for single-celled organisms (prokaryotes)that lack tissues, organs or organ systems , their organisation starts with organelles and just ends at cells

Answer:

D)  producers

Explanation:

In an ecosystem, as plants are termed autotrophs, they are the producers.

An ecosystem is made up of both living and non-living components which co-exists together.

Answer:

D) producers

Explanation:

In an ecosystem, plants are autotrophs. The term autotrophs means plants are capable of changing sunlight into sugar. In other words, plants are D) producers.

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Answer:

The answer is "[tex]\bold{lacI^{+} lacP^{+} lacO^{+} lacZ^{-} lacY^{-} lacA^{+}}[/tex] "

Explanation:

In this question, the prescribed mutant E. Coli does not express the lacZ gene, so beta-galactosidase doesn't quite exist. Therefore in a particular strain, there is also the potential of lacZ– and that only the genetic makeup indicates its production of lactose. Therefore the above-mentioned option is correct.

Answer:

D: recombination due to crossing over

Answer:

The six limbs shown in the image have a similar bone arrangement, but the size and shape of the bones vary among the organisms. The structures in the image serve different functions for each organism. Flippers helps whales swim, and arms help humans use tools. Horses and lions use their legs for support and movement, and a frog uses its legs to jump. Wings help birds fly.

Explanation:

Answer:

Cell membrane surround cells, but cell wall is an extra covering outside plant cells, made up of cellulose

A cell plasma membrane and cell wall surround the eukaryotic cell.In the animal cell, there is a plasma membrane. In the plant cell, both the plasma membrane and cell wall are present.

The plasma membrane is the outermost covering of the cell that restricts the movement of molecules across the cell. In eukaryotic cells, the plasma membrane is hydrophobic by nature. It has carriers and ion channels in it. The plasma membrane has proteins, glycolipids, glycoproteins, etc. Apart from this, the plasma membrane of animals has cholesterol.

The plant has a cell wall outside of the plasma membrane. The cell wall is made up of cellulose. The polysaccharide cellulose is composed of glucose monomers.The cell wall is more rigid than the plasma membrane. The cell wall is present in some bacteria and fungi, but the composition of the cell wall is different from that of the eukaryotic cell.

Hence, the cell is surrounded by the plasma membrane and cell wall in eukaryotes.

To learn more about the plasma membrane, refer to the following link:

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Answer: 80,000,000

Explanation:

Based on data from the World Bank in 2008, Americans consume a disproportionate amount of calories in relation to their population with Americans consuming 24% of the world's energy while only being 5% of the population.

It was estimated that Americans were consuming 200 billon more calories than was required and that this was enough to feed an additional 80 million people.

Answer:

In the form of conifers, a class including pines, firs, cypresses and gymnosperms remain one of the dominant types of plant on Earth, particularly in the Northern Hemisphere. Some of the biggest plants on earth, like the sequoia, aka the Giant Redwood, which is a type of cypress, are gymnosperms.

Explanation:

Answer:

Giant sequoia, (Sequoiadendron giganteum), also called Sierra redwood, coniferous evergreen tree of the cypress family (Cupressaceae), the largest of all trees in bulk and the most massive living things by volume.

Explanation:

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Answer: false

Explanation: Polyester is hydrophobic. For this reason, polyester fabrics don't absorb perspiration, or other fluids, leaving the wearer with a moist, clammy feel. Polyester fibers typically have a low level of wicking. Relative to cotton, polyester is stronger, with a greater ability to stretch

water can exist in three states; liquid, solid and gases.

Explanation:

At temperature below zero degree Celsius, water exists as a solid but as it absorbs temperature from Its surroundings, it undergoes melting and turns into liquid water. More application of heat makes it boil leading to the evaporation and vapourisation of water molecules( note: evaporation occurs at all temperature).

Answer:

give them brainlist

Explanation:

Answer:

A

Explanation:

Answer: C

Explanation:

It is not natural selection because the scientist are making to where the next cow generations produce more milk instead of nature doing the work over time.

Answer:

Diffusion is the process where solute substances naturally tend to move from areas of higher concentration to areas of lower  concentration.

Explanation:

In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower  concentration.

What is the name of this process?

HIGH -> LOW is Passive transport where the cell does not require energy to transport substances.

Diffusion is the process where solute substances naturally tend to move from areas of higher concentration to areas of lower  concentration.

The answer is B if I remember correctly

i think it is c.

tried my best

Answer:

The seedling forms a hypocotyl hook that pushes through the soil. Once the seedling reaches the light, the hook opens to create a straight seedling. The cotyledons function as the repository for food reserves in the seed.

Explanation:

Explanation:

The correct answer for ur question is oxygen

Answer:

c

Explanation:

Answer:

(D) is not

Explanation:

lipid- any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but solube in organic solvents. They include many natural oils,waxes,and steroids.

A shift in species composition to less salt-tolerant plants is the most likely long term effect.

The salt tolerance test is performed using Tryptic Soy Broth with added sodium chloride (regular table salt) to create an overall salt concentration of 6.5%. It is a selective medium which tests the ability of an organism to survive in a salt-rich environment.

The salt tolerance of a plant is often defined as the degree to which the plant can withstand, without significant adverse effects, moderate or high concentrations of salt in water on its leaves or in the soil within reach of its roots.

Hypersensitivity to catecholamines may be the cause of salt sensitivity. A low sodium concentration in saliva deserves further study as a simple screening test to identify salt-sensitive subjects.

Learn more about salt-tolerant plants:

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Answer:

We can't see the bar graph but showers use a lot of water so my guess would be cutting back on the time spent in the shower.

Explanation:

Answer:

CoDominance

Explanation:

Answer:

a wedge

Explanation:

Answer:wedge

Explanation:

Answer:

1. The lack of clean water can affect people's lives because people use water for everyday things. If people do not shower with clean water, then what is the point of showering at all? Also, people use water to cook, so if people are using dirty water then you could get sick. Some people do not buy water, so you would have to boil the water each time you want to drink it. This is how a lack of clean water could affect people's lives.

2. There are many things that could change people's lives positevly. For example, if you move to a new state where it is warmer. If you go to a new school you could make new friends. Also, somebody new could move in down the street and you could have more friends. Even something as small as eating your favorite meal for dinner could change your life. You could remember it as being amazing. These are how changes (small and large) could change somebody's life.