A student wanted to determine the evaporation rates of three liquids. She placed 50 mL of each
liquid outside for an hour on the same day and then measured how much liquid evaporated. Which
would improve the validity of this investigation?
A. Put all three liquids outside at the same time
B. Have 2 students work
Ctogether on the investigation
Change the time for Liquid 3 to 7:00–8:00 PM
he amount of liquids used
Answers
Answer: I believe its C
Explanation: 2 and 3 are the same times
Its better to change the time to get different results.
Related Questions
ARTS :
true. or. false.
Answers
Answer:
true false true false true
fungi and bacteria are_____.
-plants -producers -decomposers
Answers
Answer:
decomposers
Explanation:
Answer:
decomposer
Explanation:
Fungi and bacteria are the most common decomposers.
Your nervous system includes the brain and spinal cord
A. True
B. False
Answers
Answer: A
Explanation: The nervous system is the brain and spinal cord.
Answer:
A. True
Explanation:
Item 5 What is the role of a generator in producing electricity? The generator stores electrical energy for later use in homes and businesses. The generator spins the turbine to create mechanical energy. The generator transforms the mechanical energy of the turbine into electrical energy. The generator reverses the turbine to create electrical energy.
Answers
Answer:
The generator transforms the mechanical energy of the turbine into electrical energy
Explanation:
Electricity generator is a device that is used in generating power supply which can be used in industries, homes and for commercial and private purposes.
It operates by converting mechanical energy into electrical energy for the use in an external circuit. mechanical energy can be obtained from steam turbines, internal combusting energy, gas and water turbines and it can be obtained through the rotating shaft.
The capacity of each generator determines the amount of energy it can supply to a given place.
Imagine carefully weighing a metal can, leaving it out in the rain for weeks and weeks until it was very rusted, and then carefully weighing it again. Would the can be heavier or lighter after it was rusted?
Answers
Answer:
The answer would be heavier, though it depends upon the type of metal. Rusting is essentially corrosion. Rust is often caused by a piece of metal getting soaked in water and then being exposed to oxygen. The rust will add more weight to the can so it becomes heavier.
Leaving out metal can in the rain for weeks and weeks until it was very rusted, and then if we carefully weighing it again it can be found that the can weighs more because the rust deposited on the metal can adds more weight.
What is rust?
Rust is referred to as an iron oxide, and a form of corrosion which is caused by a chemical reaction which affects masses of iron and steel.
Once formed, rust starts to eat away at the metal, forming a flaky, orange red coating which weakens the iron. It occurs when the metal reacts with oxygen and water.
For more details regarding rusting, visit:
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A Lewis Dot Structure shows only valence electrons.
A. True
B. False
Answers
Answer:
A. True
Explanation:
Also, if you've ever read Romeo and Juliet, please help me in my questions tab! I only need a general answer, and I'll give brainliest.
Answer:
A. True
Explanation:
Yes, a Lewis Dot Structure shows only valence electrons.
WHATS THE ANSWER ?????
Answers
Answer:
Antigens are secreted by the endocrine system
Explanation:
The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with
Salad vegetables are cut and placed in plain water. Why?
Answers
Answer:
Not only does soaking produce rid it of harmful germs or chemicals, but it can also be used to revitalize produce for a better taste and longer life. If you purchase local, organic fruits and vegetables that contain no chemicals or harmful preservatives, you can use warm water to rinse your produce.
Explanation:
Fun facts:
Through osmosis, water naturally moves from areas of low salt concentrations to areas of high salt concentrations. ... Consequently, the water in a leaf of lettuce that is soaking in salt water will migrate out of the lettuce leaving a mushy leaf behind.
lizard is a poikilothermic animal why
Answers
Answer:
Lizard is a poikilothermic animal because lizards are those animals that do not require a fixed body temperature, their temperatures can fluctuate with little to no adverse effects to their overall health.
Explanation:
Reptiles are cold-blooded, or ectothermic, animals. This means that they cannot produce heat in their own bodies, and have to rely on their surroundings to keep warm. By moving in and out of sunlight, reptiles can keep their body temperature at a steady level throughout the day.
Individual bones are organs.
A. True
B. False
Answers
Answer:
a
Explanation:
Answer:
True
Explanation:
Because they are made out of tissues
Which of the following substances will conduct electricity?
A) Methanol
B) Aqueous KCI
C) NaCl in its solid form
D) Sugar solution
Answers
Answer:
b
Explanation:
because It have ionic bonding and when in molten form ions are mobile and carry a charge however when in solid form it wouldn't conduct electricity as the ions will be fixed in position.
hope this helps:)
12. Flowers whose reproductive structures consist only
of stamens would be able to produce
A) fruits with seeds
B) fruits without seeds
C) pollen
D) ovules
Answers
Answer:
Pollen reproductive structures consist only
of stamens would be able to produce
Explanation:
No C is the answer
Reproductive structures are structures that make up the reproductive organs of a particular organism. These structures could include either female or the male reproductive organs.
Flowers with reproductive structures that comprise of only stamen would produce only pollen (option c).
Stamens are reproductive organs found in plants and they are male reproductive organs. For fruits with seeds to be formed the male and female reproductive organs must come together to produce a fruit.
Flowers with only the stamen will produce only pollen which is a male gamete that needs to be joined to the female gamete, ovary produced from the female reproductive structure (pistil) in a plant to produce a fruit.
Learn more: https://brainly.com/question/23140508
if humans began hunting and driving the great barracuda to extinction how would this affect the ecosystem (answer should discuss biodiversity, food webs, and food chains)
Answers
Answer:
then it may effect the entire biodiversity as many rare animals and birds can be killed and they can be existinc from the nanture it will directly affect the ecosystem and species diversity the food chain will also be directly affected as any one animal or species will be existinc the number of other species may rapidly increases or decrease
HOW DOES THE PROCESS OF TRANSLATION CONVERT INFORMATION
Answers
Answer: Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.
Explanation:
Hope it helps you if not sorry
Answer:from a nucleic acid code to an amino acid code
Explanation:
NOT from a DNA code to an RNA code
The light reactions can only occur in the absence of light.
A. True
B. False
Answers
Answer:
false
Explanation:
the light reactant needs light
the lacteal is responsible for the transport of
A. Fats
B. Blood
C. Protons
D. carbohydrates
Answers
Answer:
Lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestines. The lacteals merge to form larger lymphatic vessels that transport chyle to the thoracic duct where it is emptied into the blood stream at the subclavian vein.
hope it helps
I NEED HELP PLEASE ANSWER FAST
A population of wolves migrates north in search of food. As the wolves travel, they enter a region that has long, snowy winters. Some of the wolves have an allele that gives them white coats. This makes them better able to sneak up on prey.
1. Which type of wolf is selected for in this new ecosystem?
2. Has genetic diversity helped or hurt the survival of the wolf population? Explain.
Answers
2. Yes, wolfs are dying slowly, like all animals but wolfs are for some reason strong animals.
help with biology please
Answers
Answer:no
Explanation:picture
Answer:
i think its number 1
hope that helps!
Answers to question 10 pretext organ system
Answers
Answer:
So what is the question you didn't put a photo
Explanation:
