Why didn't people know about germs or microbes before the mid-1800s?

Answers

Answer 1

Answer:

Explanation:

the germ theory explains why they might not have known


Related Questions

Which of the following statements best describes Community Supported Agriculture (CSA)?
A. a service club that provides volunteer labor to local farmers
B. special zoning laws permitting agriculture within residential neighborhoods
C. a local tax on the town or county scale that is contributed to local farmers
D. local farms that sell produce directly to subscribed consumers

Answers

Answer:

D

Explanation:

D. local farms that sell produce directly to subscribed consumers

/Community-supported agriculture (CSA) is a food production and distribution system that directly connects farmers and consumers. In short: people buy "shares" of a farm's harvest in advance and then receive a portion of the crops as they're harvested.

I believe it would be b

*Urgent*

Cell phones, radar, and televisions are examples of devices that function by
using electromagnetic waves. What property of electromagnetic waves makes
them useful for phone, radar, and television signals?
A. Electromagnetic waves cannot be changed.
B. Electromagnetic waves can travel long distances.
C. Electromagnetic waves travel at different speeds.
D. Electromagnetic waves are harmful at high frequencies.

Answers

Answer:

es la C. Electromagnetic waves travel at different speeds.

The correct option is B i.e. Electromagnetic waves can travel long distances.

what are electromagnetic waves?

Electromagnetic waves, or EM waves, are waves that are formed when an electric field and a magnetic field vibrate together. EM waves, in other words, are made up of oscillating magnetic and electric fields. When an electric field collides with a magnetic field, electromagnetic waves are created. As a result, they're called 'electromagnetic' waves.

An electromagnetic wave's electric and magnetic fields are perpendicular to one other (at right angles). They are likewise perpendicular to the EM wave's direction.

Cell phones employ radio frequencies, a type of electromagnetic energy found between FM radio waves and the wavelengths used in microwave ovens, radar, and satellite stations on the electromagnetic spectrum. Ionizing radiation, the type that destroys DNA, is not emitted by cell phones.

To know more about electromagnetic waves here

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#SPJ2

In an ecosystem, _______ are producers because they make their own food. A. plants B. herbivores C. omnivores D. animals

Answers

Answer: A. plants

Explanation:

 Plants are producers. They make their own food, which creates energy for them to grow, reproduce and survive.

When the moon orbits the Earth and the_____of the moon shines on the Earth we have a___eclipse.

Answers

Answer:

Shadow, an d total

Explanation:

which bonds form between polar molecules

Answers

Answer:

For polar molecules, the electrons shared in a covalent bond tend to gather on one side of the molecule while the other side becomes positively charged.

Explanation:

answer: hydrogen bonds

explanation: polar molecules that include a hydrogen atom can form electrostatic bonds

Please answer I’ll give brainliest. I need this for a quiz Please ❤️

Answers

B makes the most sense to me because there would be more food for the carnivores within the population.

What benefit is there for organisms whose fruit grows heavy and falls from trees onto the
ground? *

Answers

Answer:

Yes, the 2nd answer is correct

Explanation:

What is starch made of.
a
b.
glucose and fructose
two disaccharides bonded together
thousands of glucose molecules linked in a long chain
all of the above
oc
od

Answers

B. Two disaccharides bonded together

For a certain chemical reaction, the bond energy of the reactants is 43 kJ, and
35 kJ of energy is released. For energy to be conserved, what is the bond
energy of the products?
A. 18 kJ
B. 78 kJ
C. 8 kJ
D. 88 kJ

Answers

Answer:

the answer is C. 8KJ

Explanation:

What does Studying the strata of rock can tell us?
A. whether climate has changed in an area
B. if species changed over time
C. if a species became extinct
D. if a biome changed over time
E. all of the above

Answers

Answer:

D. if a bioma changed overtime

Explanation:

The study of the strata is used to determine what the earth was like back in the past compared to what it is now. Even a tiny dull lump on a rock can tell us about what happened way back when. (btw I love ur pfp)

What is a major cause of large algae blooms in bodies of water?
A-thermal pollution from power plants
B-accumulation of chemical fertilizers
C-agricultural animal wastes
D-oil and gasoline

Answers

Answer:

It is B

Explanation:

I got it correct on my quiz.

What are the two types of seed plants?

Answers

Answer:

The gymnosperms and the angiosperms

the gymnosperms and the angiosperms

URGENT!!!

A nerve cell and a liver cell in the same dog make different proteins. Which of these statements best explains why different cells have make proteins? *


A) The different cells in an organism have different genes.


B) Each cell transcribes (reads) only the genes the cells need


C) The different cells in an organism all transcribe (read) the same genes, but their ribosomes make different proteins from them.


D) Each cell in an organism produces the same proteins, but the ones that aren't needed are immediately digested.

Answers

Answer:

C

Explanation:

The different cells in an organism all transcribe (read) the same genes, but their ribosomes make different proteins from them.

the bonds within one water molecule are called

Answers

Answer:

Cohesion: Hydrogen Bonds Make Water Sticky

Explanation:

Cohesion: Hydrogen Bonds Make Water Sticky

In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

Answer:

The word you are looking for is: Covalent

Explanation:

I majored in Biology

suggest why a baby born without any mitochondria will have difficulties growing

Answers

Answer:

or our bodies the conversion from food energy to ATP happens in mitochondria. If your mitochondria are not working properly then you are less able to convert food into ATP. For cells that require a lot of ATP, for example your muscles, this is a problem and they may become weaker and get tired faster.

Explanation:

The diagram represents a specialized cell located in the root of a plant. The arrows in the diagram indicate the movement of molecules of oxygen and water into the cell.Which choice correctly identifies the process responsible for the movement of each type of molecule represented in the diagram? *

Answers

Answer:

where is the photo ??

Explanation:

...

What did early organisms release into the air

Answers

Answer:oxygen

Explanation:

It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere

Why is genetic engineering possible?

Answers

Answer:

Genetic engineering is possible because the genetic code—the way information is encoded by DNA—and the structure of DNA are universal among all life forms.

I hope This helpes you :)

Explanation:

Answer:

It's also called recombinant DNA technology involves the group of techniques used to cut up and join together genetic material especially DNA from different biological species

hope it helps

Which season are we currently in? *

Answers

The season that we are currently in is Winter

Answer:

Still in winter. Spring doesn't start until March 20th

Explanation:

Hope that helps :)

How can I use MIE scattering to determine the best particle size to light scattering with glasses?

Answers

Answer:

There is a simple algebraic formula relating turbidity to optical properties. You do not need Mie theory. It is given in van de Hulst "Light scattering from small particles" (a nice cheap reprint from Dover Press). More easily accessible are any of the Mie calculators avaiable on the Internet, say Miecalc, these will give the exact result.

Jordan is asked to draw an image of where he might find igneous rocks. Jordan can figure out where this rock would be found by learning how it is formed. Which of the following will mostly likely cause the formation of igneous rock due to tectonic plate movement?

Answers

I can’t see your answer choices, but igneous rocks are made from cooled lava or magma. This is why these rocks are so brittle and grainy. I’ve attached a helpful image to better explain! Good luck!!!

Thunderstorms are more common in some areas than in others. The map shows the average
number of thunderstorms per year in different parts of the United States.
Average Number of Thunderstorms per Year
30
10
32
California
Atlantic
Ocean
Pacific
Gorida
Ocean
Gulf of
Mexico
Source: NOMA National Weather Service
Why are there significantly more thunderstorms in Florida than in California?
A The state of Florida is smaller than the state of California.
B The air in Florida is more stable than the air in California.
C The air above Florida holds less moisture than the air above California.
D The ocean currents near Florida are warmer than the ocean currents near California.

Answers

Answer:

gulf of Mexico because it is one of the biggest sea

The average no. of thunderstorms per year in the different parts of the united states is 30, most thunderstorms happened in California but were significantly more common in Florida than in California.

Countries where thunderstorms per year according to average numbers-

FloridaGulf of MexicoCaliforniaPacific oceanAtlantic ocean

The Gulf of Mexico is the biggest sea that's why thunderstorms mostly happened.

Why are there more thunderstorms in Florida than in California?

Thunderstorms are more common in some areas than in others. The map shows the typical number of thunderstorms per annum in several parts.

The state of Florida is smaller than the state of California is the reason why thunderstorm mostly happens in Florida than in California.

Therefore, the average no.of thunderstorms is 30 mostly in the Gulf of Mexico, affecting mostly in Florida.

Learn more about thunderstorms here:

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Is the genetic material is made of protein?

Answers

NOOOO! Don’t believe those 1900s lies! The genetic material of life is DNA!

Researchers have been able to study the pathway of a secreted protein by tagging it with a fluorescent marker. Using this method, you would observe Fluorescence moving from the ER to which organelle

Answers

Answer:

I would observe fluorescence moving from the ER to the Golgi apparatus.  

Explanation:

Once the protein leaves the endoplasmatic reticulum (ER), it is in a vesicle that fuses with the Golgi apparatus. The Golgi modifies and packs the protein to send it to its destination. In other words, the Golgi complex is the place where proteins go to be functional and be given a place either inside or outside the cell.

What is the difference between a biome and a microhabitat

Answers

A micro habitat is small habitat that exists on a normal habitat, where as the biome describes the type of area on a much larger scale. for example; a desert is a biome and in that desert there is an area where grass grows and lot of mice live in that area (habitat), and there is a part of that habitat where one of the mice feeds (micro habitat). a micro habitat can also exist on another animal (parasite).

The difference between a biome and a microhabitat are as follow:

Microhabitat: A microhabitat is a small specialized habitat within a larger habitat. An example of a microhabitat is a caterpillar snacking on leaves that have fallen from a walnut tree in the orchard.

Biome: A biome is a large region of Earth that has a certain climate and certain types of living things. Major biomes include tundra, forests, grasslands, and deserts.

What is a habitat?

A habitat is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive.

Hence, microhabitat is a small specialized habitat whereas biome is a large region.

To learn more about habitat click here :

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Which two statements in the table are true for plant cells and FALSE for animal cells?
1 They use the fuel stored in food for energy.
2 They use energy, carbon dioxide, and water.
3 They need nutrients but make their own food.
4 They need water and many kinds of nutrients
0
A. 4 and 1
o
B. 1 and 2
O
C. 3 and 4
D. 2 and 3

Answers

letter d: 2 and 3 hope this helps

73+28+72718-838199281

which is not a greenhouse gas and therefore not responsible for global warming?
A: c02
B: Methane
C: Nitrogen
D: Water Vapor

Answers

Answer:

C: Nitrogen

Explanation:

nitrogen is transparent to infrared light. the molecules are invisible because when you stretch one, it doesn't change the electric field.

The diagrams below show two organisms. How are these two organisms classified?

A) same kingdom, different species
B) same kingdom, same species
C) different kingdoms, same species
D) different kingdoms, different species

?? Help please.

Answers

Explanation:

it will option D hope it helps

what are 3 different types of mutation ​

Answers

Answer:

There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

Explanation:

mark me as brainliest

Answer:

base substitutions, deletions and insertions.

Explanation:

Indicate which of the statement below refer to : Sexual reproduction or Asexual reproduction

1. The characteristics of the offspring are like to those of the parents.

2. The offspring is a combination of the traits of both parents.

3. Sex cells are involved in the production of offspring.

4. New individuals from a single parent are reproduced very fast.

5. The cells of the offspring have similar genes as the cells of the parent.

Note: Answer it correctly, Nonsense answer = report. :-)​

Answers

Answer:

Its below in the explanation

Explanation:

1. Refers to Asexual Reproduction

2. Sexual reproduction

3.Sexual reproduction

4.Asexual Reproduction

5.Sexual reproduction

the first one was a bit unclear but im pretty sure it right.

Sorry if im wrong. Hope this helps!

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