Which safety precaution is recommended when a
liquid is being heated in a test tube?

Answers

Answer 1

Answer:

running away

Explanation:


Related Questions

Anna wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger brand, and EverReady. Independent Variable (IV): _Type of clock_____________________________________________ __________________________________________ Dependent Variable (DV): ______________________________________________ Control: _____________________________________________________________ Constants:____________________

Answers

Answer:

Independent variable: Type of battery

Dependent variable: Time the clock stopped

Control: None for this experiment

Constants: Same type of clock

Explanation:

Independent variable in an experiment refers to the variable which the experimenter changes or manipulates in order to bring about a measurable response. In this case, the independent variable is the TYPE OF BATTERY USED.

Dependent variable is the variable that responds to changes made to the independent variable. It is the measured variable in an experiment. In this case, the dependent variable is the TIME THE CLOCK STOPPED FOR EACH BATTERY

Control is the group that does not receive the experimental treatment. In this case, NO control group is USED.

Constant is the variable that the experimenter keeps unchanged throughout the experiment for all groups. The constant in this experiment is the CLOCK USED.

Answer:

Independent variable: Type of battery

Dependent variable: Time the clock stopped

Control: None for this experiment

Constants: Same type of clock

Explanation:

BEST ANSWER GETS BRAINLIEST 5 STARS THX and FOLLOW


Which sentence correctly explains the process and conditions needed for hail to form? (worth 30 points)

Group of answer choices

A. The temperature of the air and the temperature of the cloud must be below zero.

B. Liquid water requires temperatures above 0 °C in order to remain in a liquid state.

C. A form of precipitation requires melting and refreezing as they fall towards the ground.

D. Ice chunks move around inside a cloud, bouncing into water droplets and growing as they fall.

Answers

Answer:

a

Explanation:

Answer:

Answer C: is the best choice

Explanation:

name of locomotory and breathing organs of shark

Answers

Answer:

Respiratory system

Explanation:

Like other fishes, sharks extract oxygen from water as it passes over their gills.

raspatory system? idk

Which of the following statements is not part of the cell theory. 1. Cells are the basic unit of structure and function in all living things
2. All cells are produced from other cells
3. Only animal cells are composed of cells
4. All living things are composed of cells

Answers

Answer:

your answer is option 3

HELP ASAP!!!!!

Which of the following best describes the motion of the object in this p-t graph

Answers

Answer:

I think its the third one should be

Answer:

The graph above shows that the position of the body is changing with time exponentially and it is accelerating. The velocity of the body is changing with time and as a result the distance it is covering per time will be changing. Generally the graph of positions against time for a body that is accelerating will always look like the diagram above. For constant velocity motion, the graph will be a straight line with slope equal to the velocity of the body.

Explanation:

The velocity - time graph will for a undergoing the motion described by this graphics will be a straight line graph with it slope equal to the acceleration of the body.

What is a big difference between to
biosphere and the geosphere?

Answers

Bio is Life Geo is Earth

Which of the following structures is at the same level organization as the mitochondrion in a plant cell

Answers

Answer:

Any other cell organelles would be at the same level of organization as a mitochondria.

MAKING BRAINLIEST, THANKS AND FIVE STARS TO CORRECT ANSWER! PLZ AND THANK YOU! HAVE A GREAT DAY! :D
Explain the importance of the cones in cone-bearing trees?

Cones attract animals that will help with plant reproduction.

Cones are used to as food source for the plant.

The cones catch rainwater for the tree to use.

The cones provide protection to seeds from animals and the environment.

Answers

Answer:

The answer is D.

Explanation:

Feel free to mark brainliest.

Answer:

The cones provide protection to seeds from animals and the environment.

Explanation:

Cones attract animals that will help with plant reproduction. (no, because no animals are attracted to pine cones)

Cones are used to as food source for the plant. ( no because food is not stored in it, the seeds are, plants don't eat their own seeds)

The cones catch rainwater for the tree to use. (no! which tree is going to suck water from their cones?)

find cos A if sin A=3/5​

Answers

Explanation:

for sin we divide the opposite by the hypotenuse

and for cos we require the adjacent divided by hypotenuse

we can get it through

a²+ b²=c²

ur unknown in this case is the adjustment which you can either substitute with a or b

a² + 3²=5²

a²=5²-3²

a²= 25-9

a²= 16

[tex] \sqrt{a ^{2} } = \sqrt{16} [/tex]

a=4

so that now we have found that I just sent we can find the cos of A

cos A= ⅘

What are the similarities between prokaryotes, eukaryotes and viruses?

Answers

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus and has other membrane-bound organelles that allow for compartmentalization of functions.

As succession reaches equilibrium or climax the biodiversity:
A. Increases
B. Decreases

Answers

Answer:

B

Explanation:

The answer is decreases

Help please asap .........

Answers

Answer:

2) an increase in temperature from 70°C to 80°C

Hope this helps!

ASAP PLEASE

All living things maintain a balance within their cells and with the environment through the process of
Group of answer choices

Evolution

Homeostasis

Growth

Development

Answers

Answer:

its Homeostasis

Explanation:

hope this helps

Answer:

its (c) Growth.

Explanation:

Basically living things contain "growth" to make cells out of living things like plants or animals.

there's your answer mate :)

choose all the answers that apply
without decomposers:
chemical nutrients would not return to the soil
dead organisms would pile up
the sun's energy could not be used
matter would not be recycled
an ecosystem is unbalanced
MULTIPLE CHOICE!!​

Answers

Here are the correct answers from Odyessyware! I got 100% correct, so the answers are: dead organisms would pile up, and matter would not be recycled.

Answer:

chemical nutrients would not return to the soil

dead organisms would pile up

matter would not be recycled

an ecosystem is unbalanced

Explanation:

please help me this due today at 4:00 whoever answers me I give him a crown (20pts)

1: Every single cell has a ________.

2:Explain the fluid mosaic model of the cell membrane.

Answers

1 every single cell has cytoplasm, cell membrane and DNA

2 The fluid mosaic are various observations regarding the structure of functional cell membranes .

Answer:

1: Nucleus

2: The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments.

Explanation:

I looked this up. I hope this helps you.

Show work

13.5mm = ?m

Answers

Answer:

0.0135

Explanation:

Move the decimal place three times to the left

Answer:

0.013 m i believe

Explanation:

Which trait can be passed from one generation to the next by genes? A. The ability to speak German B. Red hair color C. A broken arm D. A shaved head
Plz help me ​

Answers

Answer:

Red hair color

Explanation:

i promise you im right.

Answer:

red hair color.

Explanation:

because red hair is a gene that you can get from you parent or some other family members. a shaved head you cut, speaking german is a trait YOU learn and that you don't get from a member of your family

Plate boundaries where plates move toward each other are called
transform boundaries.
convergent boundaries.
divergent boundaries.

Answers

convergent boundaries :)

ANSWER PLEASEEEEE TYYY

Answers

Answer:

A-D

Explanation:

They both lie on the same ring.

I hope this helps! Happy learning, friend :)

please helpppppp meeee

Answers

Answer:

what happened my friend is everything fine well 1 + 1 equals 2 got it?

Lolhow am I supposed to help there is nothing there

in mutualism neither organism benefits true or false

Answers

Common types of symbiosis are categorized by the degree to which each species benefits from the interaction: Mutualism: In mutualistic interactions, both species benefit from the interaction. ... Commensalism: In commensalism, one organism benefits while the other organism neither benefits nor suffers from the interaction.

What is the role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem

Answers

Answer:Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. ... Plants, algae, and many microorganisms use the energy from light, carbon dioxide from the atmosphere, and water to make sugars (food) through the process of photosynthesis, which also releases oxygen.

Explanation:

hope it helps :)

The role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem is the following:

The fundamental energy source of all ecosystems is the Sun, which sends a large amount of energy to Earth in the form of light and heat.

The various green plants use energy from the sun, water and nutrients from the soil, and carbon dioxide from the air to produce organic matter.

The process by which light is used as an energy source to transform CO2 into organic compounds essential for life is called photosynthesis.

The manufactured organic matter is used by the photosynthetic organisms themselves for the maintenance of their vital processes through cellular respiration.

Energy, once solar energy is transformed by producers into chemical energy by making organic matter in photosynthesis, is transmitted along with matter.

In each transfer of energy, between the different types of organisms there is a release of energy to the environment, in the form of heat.

On the contrary, matter flows cyclically, chemical elements are transferred between living beings and in the physical environment of each ecosystem.

Therefore, we can conclude that the role of photosynthesis in the cycling of matter and the flow of energy through the ecosystem is to produce the transformation not only of inorganic into organic matter, but also of light energy into chemical binding energy, oxygen is released as a waste product and is used by most organisms for cellular respiration.

Learn more here: https://brainly.com/question/19427203

what is the point on an object where the force of gravity is considered to act A. center of mass B. top of an object C. middle of the object D. center of gravity​

Answers

Answer:

D. Center of gravity.

Explanation:

Gravity always acts downward on every object on earth. Gravity multiplied by the object's mass produces a force called weight. Although the force of an object's weight acts downward on every particle of the object, it is usually considered to act as a single force through its balance point, or center of gravity.

Answer:

D. center of gravity​

Explanation:

Definition of toxins

Answers

Answer:

A poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable.

Explanation:

Describing Water Molecules Which of these statements would be true if the water molecule was linear instead of bent? Check all that apply. Water molecules are polar. Water molecules are nonpolar. Water molecules undergo hydrogen bonding. Water molecules have a linear geometry. Water molecules have a bent geometry.

Answers

Answer: These are the correct answers...

-Water molecules are polar

-Water molecules undergo hydrogen bonding

- Water molecules have a bent geomtry

Hope this helps whoever needs it

The statements that are correct about water molecules are:

Water molecules are polar. Water molecules undergo hydrogen bonding.Water molecules have a bent geometry.Water is polar molar due to the unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).Water molecules forming hydrogen bonds with one another.Water has a bent shape is that the two lone pair of electrons are on the same side of the molecule.

Learn more:

brainly.com/question/14000034

1. Floods can devastate an ecosystem, however they can also have a positive impact. Please explain the positive impacts major floods can have on the ecosystem.
2. How do seasonal changes in temperature, water availability and sunlight affect ecosystems?
3.Propose 5 ways that humans can help minimise the negative effects both natural events and human impact can have on ecosystems. (Not from google )

Answers

Answer:

1. Whilst flood events are devastating to humans they are a natural occurrence that can provide negative and positive important environmental impacts.

Flooding helps spread organic material, nutrients, and sediments which enrich floodplain soils. They also replenish water resources and trigger life processes such as bird breeding events, migration, and seed dispersal in flora and fauna adapted to these cycles, while good soil moisture can allow crops and pastures to be established.

Which is most directly responsible for water’s unique properties

Answers

It's Hydrogen Bonds

Explanation:

Water has some unusual properties due to its hydrogen bonds. One property is cohesion, the tendency for water molecules to stick together. The cohesive forces between water molecules are responsible for the phenomenon known as surface tension.

Small hydrophilic molecules are transported through a cell membrane by

Answers

Proteins which form channels may be utilized to enable the transport of water and other hydrophilic molecules; these channels are often gated to regulate transport rate. In facilitated transport, hydrophilic molecules bind to a "carrier" protein; this is a form of passive transport

Energy in an ecosystem flows directly from
a. producers to tertiary consumers
b. producers to secondary consumers
C. tertiary consumers to secondary consumers
d. secondary consumers to tertiary consumers

Answers

energy enters an ecosystem through photosynthesis. By feeding on plants and on one another, animals play an important role in the movement of the matter/energy though. they also influence the quantity of plant and biomass present. so the anwser is D, secondary consumers to tertiary consumers

Answer:

''d' is correct.

Explanation:

Producers-->Primary Consumers-->Secondary Consumers-->Tertiary Consumers

NEED HELP ASAP!! due at 11:59

Answers

There’s nothing here to answer.
Yeah put a different picture
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