What was the variable in Redi's experiment?

a swan neck flask that prevented air from getting in


a straight neck flask to allow air to get in


meat sealed in jars that didn’t have contact with air


uncovered meat that had contact with air

Answers

Answer 1

Answer:

meat sealed in jars that didn’t have contact with air

Explanation:

Answer 2

Answer:

The last one is the correct answer.

Explanation:


Related Questions

Question 5. Brainliest involved

Answers

Answer:

id say 50 50

Explanation:

Answer:50%

Explanation:

What ethical issue is related to genetically modified crops?

Answers

Explanation:

Five sets of ethical concerns have been raised about GM crops: potential harm to human health; potential damage to the environment; negative impact on traditional farming practice; excessive corporate dominance; and the 'unnaturalness' of the technology.

Passive transport uses no energy because its moving molecules____________ the concentration gradient while active transport uses energy because its moving molecule ________________ the concentration gradient.

Answers

Moving molecules with the concentration gradient. Moving molecules against the concentration gradient.

Answer:

with, against

Explanation:

Hope this will help

I need the answer it's very hard todo​

Answers

Answer:

a

Explanation:

Answer: A



Explanation:

what is formed during photosynthesis​

Answers

Answer:

Glucose and oxygen is produced

Explanation:

oxygen is usually released as a by-product and the glucose made is converted to starch and stored in leaves

plus ATP molecules are formed from excess light energy and is converted to a high energy chemical compound

how do weedkillers work?​

Answers

Answer:

the have a special chemical in them causing the plant to descintagrate over time from the special chemical :)

Explanation:

Question:

how do weedkillers work?

Answer:

It works by stimulating growth in the weed that cannot be sustained.

What is Weedkillers?

→Weedkillers are chemical-based liquids that are specifically engineered to target different types of weed in the best way possible. Whatever the weeding job that you are trying to tackle, there is a weedkiller that is matched to that job and will do exactly what you need.

Hopefully Help:)

#CarryOnLearning

hey guys could you help me???

A cell passes on its genetic information ________.
A.
each time it divides
B.
only during certain divisions
C.
before it divides
D.
to neighboring cells

Answers

A. Each time it divides

Que tipo de procariotas crees que podrían sobrevivir a un viaje por el espacio? Explica. ayuda pliis

Answers

Answer:

bacterias extremófilas

Explanation:

Los organismos extremófilos son aquellos capaces de vivir en condiciones extremas. Los extremófilos pueden ser tanto procariotas (arqueas y bacteria) como eucariotas (hongos, plantas, animales, etc). Algunos ejemplos interesantes de bacteria extremófilas capaces de sobrevivir en condiciones extremas como las que se encuentran en el espacio incluyen:

1- Deinococcus radiodurans, la cual es una bacteria capaz de resistir grandes dosis de radiación.  

2- Thermus aquaticus, una bacteria capaz de vivir a temperaturas entre 50 y 80 °C. Esta bacteria produce una ADN polimerasa termoestable que ha sido utilizada para la reacción en Cadena de la Polimerasa (PCR)

3- Polaromonas vacuolata, una bacteria capaz de desarrollarse completamente sin problemas a temperaturas muy bajas. (entre 4 °C a 0 °C).

help me please i’m learning in anatomy and physiology

Answers

The answer to that question is the one on the fort home answer

Draw your own Punnett square using the following data.
he mother has long fur:
(F)
F = long fur
Che father does not have long fur: (ff)
f = short fur

Answers

Answer:

The alleles of the mother are : FF

The alleles of the father are : ff

The Punnett square will be:

      |   f   |   f  |

  F  |  Ff  |  Ff  |

  F  |  Ff  |  Ff  |

URGENT Which of the following best explains why there are seldom more than five trophic levels in a food chain?

O The ecosystem contains too much biomass living mass)

O Most carnivores function at more than one trophic level
Top cami vores are too few in number to prey effectively

O Energy is lost from each trophic level

Answers

D. Energy is lost from each topic level. Hope this helps!

The statement that best explains why there is usually not more than five trophic levels in a food chain is that Energy is lost from each trophic level.

A food chain shows the transfer of energy and nutrients from organisms to organisms in a feeding pathway.

Each step along a feeding pathway is known as a trophic or feeding level.

This feeding pathway in nature follows a certain pattern:

It starts with a primary producer( the grass).the primary producer is eaten by a primary consumer (example, the zebra);the primary consumer is eaten by a secondary consumer (example, the lion);decomposers converts the remains of dead  producers and consumers.

At every trophic level, some of useful energy is lost as heat energy. Thus as we move along the food chain, the amount of useful energy decreases progressively.

Learn more here:

https://brainly.com/question/16432122

A one-eyed purple people eater is crossed with a two
eyed purple people eater. All of their offspring have two
eyes. Which trait is dominant?

Answers

Answer:

The two eyed

Explanation:

Put the levels of organization in an ecosystem in order from the largest to the smallest

Answers

Individual, population, community, ecosystem, biosphere

Is this wrong? I lost my Nanna 2 years ago, and I still cry at night because I miss her...

Answers

Answer:

nope

Explanation:

its right.........

(GIVING BRAINLIEST!!!!!!!)

Which climate zone has hot summers, cold winters, and average amounts of precipitation throughout the year?

A) Equator
B) Temperate
C) Tropical

Answers

Temperate I believe
The answer is Temperate here

Can someone please help me
Will mark u brainliest !

Answers

Answer:

Letter C

Explanation:

Answer:

d i think

Explanation:

9 facts about the atmosphere

Answers

Explanation:

Air is mostly gas. Air is all around us, but we can't see it. ...

Air isn't just gas. ...

Air is important for living things. ...

Carbon dioxide in the air can be both good and bad. ...

Air also holds water. ...

Air changes as you go up, up, up. ...

Air is a protective cushion. ...

There is life in the air.

Hey I'm Chloe Can you Help Me, Thank you, I will Give Brainlest :)
What is the definition of Mitochondrion

Answers

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers

Answer:

The mitochondrion is a double membrane-bound organelle found in most eukaryotic organisms. Some cells in some multicellular organisms lack mitochondria. A number of unicellular organisms, such as microsporidia, parabasalids, and diplomonads, have reduced or transformed their mitochondria into other structures

Explanation:

Brown and White are codominant in Cows. A hetrozygote cow that has both brown and white spots is called a Roan Cow (BW). Cross two Roan cows together.

Answers

About the question:

I failed to find the complete question. However, in the following box, I will perform the cross and explain the results.

Answer and Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

Cuando se introduce material genético directamente en un órgano enfermo con el objetivo de que recobre su función, ¿qué tipo específico de terapia se está realizando? A. In vivo. C. In situ. B. Ex vivo. D. Transgénica

Answers

Answer:

No te compliques, ponle terapia genética.

Explanation:

Es uno de los incisos solo que en diferentes palabras.

Espero y te sirva.

the body of fish is streamlined why​

Answers

Hopes this helps:

Answer:

The body of a fish is streamlined because, it increase the speed of the fish in the water. The more the streamlined shapes more easier for the fish to swim in the water.

In photosynthesis, water molecules
are split into ____
and _____
atoms. Carbon dioxide molecules
are split into ____and ____ atoms.

Answers

Answer:

1) glucose and water

2) glucose and oxygen

What device converts the various forms of energy into electrical energy?

Answers

Answer: photovoltaic cell i think

Explanation: A device which is used to convert light energy directly into electrical energy is called as photovoltaic cell or a solar cell.

What is the solubility of potassium chloride at 55C

Answers

Answer: So our final value for the solubility of potassium chloride at 15 degrees Celsius is 36.3 grams per 100 mL of water. Hope this helps. Can u give me brainliest

Explanation:

Why does sexual reproduction process create offspring with genetic variation (different genes between parents and siblings)?

Answers

Answer:

Sexual reproduction process creates offspring with genetic variation because their are 2 parents unlike in asexual reproduction where there's only 1 parent. Since, there are 2 parents with difference in their DNA & genes the offspring too will have a variation.

In the tundra, what is the difference between the biotic and abiotic factors you saw in the image?

Answers

Answer:

Abiotic factors refer to non-living physical and chemical elements in the ecosystem. ... Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction.

Explanation:

Biotic is living part whereas abiotic is non-living part of an environment.

The main difference between biotic and abiotic factors is that biotic factors refer to the living part or component of environment such as plants, animals etc whereas abiotic factors refer to non-living part of the environment such as temperature, humidity and light etc. Both biotic and abiotic factors depends on each other for their survival so we can conclude that biotic is living part whereas abiotic is non-living part.

https://brainly.com/question/22342643

9 facts about continents?

Answers

Explanation:

The seven continents include: North America, South America, Europe, Asia, Africa, Australia, and Antarctica. The Continent of Africa is home to the World's third largest desert. This desert is called the Sahara Desert. It is the hottest desert in the world and takes up an area as large as the country of China.

you can make points out of this

Answer:

-Austrailia/Oceania is the smallest continent of the planet.

-Africa is the continent with the most countries.

-The oldest human fossils were discovered in Africa.

-About 580 million people live on North America.

-Europe houses 2 of the smallest countries in the world.

-About 430 million people live on South America.

-Antartica is the smallest continent by population.

-Asia houses some of the richest nations in the world.

-Africa houses the largest river in the world.

What was the cause of Dede's condition?

Question 1 options:

only a bacteria infection


bacteria infection plus immune system issues


only a virus infection


virus infection plus immune system issues

Answers

Who is Dede and what are her symptoms. We need more context

pls help! In dragons, fire breathing is a sex linked (x- linked) trait. Fire breathing is a recessive condition carried on the x chromosome.

Identify the sex and if it is a fire breathing dragon or a non-fire breathing dragon
a) XX
b) XTY
c) XY
d) XXT
e) X*XT

What would be the genotype for each of these dragons?
a) Fire breathing female
b) Non-fire breathing male
c) Non-fire breathing female
d) Carrier for fire breathing female​

Answers

Non fire breathing animal is the answer i hope ( I apologize if its wrong )

how much will atmospheric carbon change in 10 years

Answers

Answer:

Explanation:

Carbon dioxide is a greenhouse gas: a gas that absorbs and radiates heat. Warmed by sunlight, Earth’s land and ocean surfaces continuously radiate thermal infrared energy (heat). Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb that heat and release it gradually over time, like bricks in a fireplace after the fire goes out. Without this natural greenhouse effect, Earth’s average annual temperature would be below freezing instead of close to 60°F. But increases in greenhouse gases have tipped the Earth's energy budget out of balance, trapping additional heat and raising Earth's average temperature.

Carbon dioxide is the most important of Earth’s long-lived greenhouse gases. It absorbs less heat per molecule than the greenhouse gases methane or nitrous oxide, but it’s more abundant and it stays in the atmosphere much longer. And while carbon dioxide is less abundant and less powerful than water vapor on a molecule per molecule basis, it absorbs wavelengths of thermal energy that water vapor does not, which means it adds to the greenhouse effect in a unique way. Increases in atmospheric carbon dioxide are responsible for about two-thirds of the total energy imbalance that is causing Earth's temperature to rise.

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