Why is it an important property for water to be less dense as a solid?​

Answer:

Water has a unique density. It is less dense as a solid than it is as a liquid, which is why ice floats on top of liquid water.

Explanation:

Answer: Water’s lower density in its solid form is due to the way hydrogen bonds are oriented as it freezes: the water molecules are pushed farther apart compared to liquid water. With most other liquids, solidification when the temperature drops includes the lowering of kinetic energy between molecules, allowing them to pack even more tightly than in liquid form and giving the solid a greater density than the liquid.

The low density of ice, an anomaly, causes it to float at the surface of liquid water, such as an iceberg or the ice cubes in a glass of water. In lakes and ponds, ice forms on the surface of the water creating an insulating barrier that protects the animals and plant life in the pond from freezing. Without this layer of insulating ice, plants and animals living in the pond would freeze in the solid block of ice and could not survive. The detrimental effect of freezing on living organisms is caused by the expansion of ice relative to liquid water. The ice crystals that form upon freezing rupture the delicate membranes essential for the function of living cells, irreversibly damaging them. Cells can only survive freezing if the water in them is temporarily replaced by another liquid like glycerol.

A golf cart changes velocity from 2m/s to 6m/s over a period of 2 seconds. What is the acceleration of the golf cart? \
A.
As voltage increases, current increases.

B.
As resistance increases, current increases.

C.
As voltage increases, resistance increases.

D.
All statements are correct according to the graph.

When a solution has a lower solute
concentration than the cell, which of the
following types of solutions is the cell in?

A)isotonic
B)isosmotic
C)hypotonic
D)hypertonic

Earth's layers are arranged by

What are the reactants in cellular respiration?

Biology Unit Three Inhe
Identify the correct transcriptions between DNA to mRNA
CTGACTGACC to GACUGACUGG
OGGATCTCTCA to CCTAGAGAGT
TACTACGGAT to UTGUTGCCTU
AGCTCCGATC to UCGAGGCUAG
OGCTAATCGAT to CGAUUAGCUA
CATCTATGAG to GTUGUTUCTC
No

Help meee pretty please

The features that distinguish a pond from a lake are
A) smaller size and no temperature gradient
B) smaller size and a temperature gradient
C) larger size and no temperature gradient
D) larger size and a temperature gradient
PLS HELP ASAP!

how can elevation greatly affect an ecosystem

ill give you a brainliest if it is right

I’m in the middle of a test help!!
Which process is responsible for changing the composition of rock?
O erosion
abrasion
chemical weathering
mechanical weathering

6.
Which of the following is an advantage for organisms living in dense populations?
A
Disease spreads slowly
B. There is little competition for resources.
C.
Dense population increase in size rapidly.
D. It is easier to find a mate for reproduction.

is oxygen biotic or abiotic

As we know that the leaves of plants are waterproof due to cuticle. On the same way, take some pieces of paper of leaf size and make them waterproof. after completion, put half of these paper pieces in cold water and half in hot water. Do all the pieces of paper remains waterproof? Explain your observation and result with justifications

Describe how chimpanzees use touch to communicate.

No searching please. I already tried that and it wasn’t the answer you need for the question.

Give brainliest!

Macromolecules that contain chonp are called what

=

QUESTION
Which of the following is true about
meiosis?
A. Meiosis makes haploid cells
B. Meiosis makes somatic cells
C. Meiosis makes identical cells
D. Meiosis makes 2 daughter cells

Changes in the direction of Earth’s axis and changes in the angle at which it tilts
affect the severity of

AYY YOO :)))
What is the variable in an experiment that stays the same?

A. Responding Variable

B. Independent Variable

C. Dependent Variable

D. Controlled Variable

Which of the cell components is least likely to affect the visible traits of an organism?

F Mitochondria
G Nucleus
H Genes
J Chromosomes

When the concentration of molecules on both sides of a membrane is the same, the molecules will

Scientists insert a gene from a firefly into the genome of certain bacterial species. When these bacteria are placed into tobacco plants and exposed to certain conditions, the plants will glow. Tobacco plants without the bacteria do not glow. Which conclusion is best supported by this experiment?
A. The firefly and bacteria share a common genetic code.
B. The bacteria transferred light-producing proteins to the plant.
C. The firefly and tobacco plant have a recent common ancestor.
D. Tobacco plants lack the ability to translate the genetic code of firefly gene.

Grass starts with 30,000 kcal of energy. A cheetah would acquire
kcal of energy after it ate a zebra that had consumed the grass.

Starch is a _____. jhcgrwzxcvhbnkjm

What statement best describes symbiotic relationships?
O Different species live in close associations in an ecosystem.
Abiotic factors interact in an ecosystem.
O Saprophytes respond to abiotic changes in an ecosystem.
O Ecosystem feeding levels show changes in energy.

Help please this is difficult‍♂️

in cellular respiration where is 90% of the energy stored?

The digestion of ___ takes place in the stomach by the actions of enzymes operating at low pH. This digestion continues in the small intestine and the large molecules are broken down into ___.

Which characteristic can be shared by all types of cells? (this includes
bacteria, animal, and plant cells)

how many atp are produced by cellular respiration of one molecule of glucose?

at which point in its orbit is a planet traveling fastest?
a) moving towards a star
b) moving away from a star