1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vodka [1.7K]
3 years ago
11

Animal life appeared on land before in the water. True False

Biology
1 answer:
spayn [35]3 years ago
6 0
The answer is False, life on earth originated from water creatures who emerged from the seas to colonize land. 
You might be interested in
What would you do if you found out that you contracted a deadly bacterium/ virus?
gizmo_the_mogwai [7]

Answer:The plague is a serious bacterial infection that can be deadly. Sometimes referred to as the “black plague,” the disease is caused by a bacterial strain called Yersinia pestis. This bacterium is found in animals throughout the world and is usually transmitted to humans through fleas.

The risk of plague is highest in areas that have poor sanitation, overcrowding, and a large population of rodents.

In medieval times, the plague was responsible for the deaths of millions of people in Europe.

Today, there are only 1,000 to 2,000 casesTrusted Source reported worldwide each year, with the highest incidence in Africa.

Plague is a rapidly progressing disease that can lead to death if untreated. If you suspect you have it, call a doctor right away or go to an emergency room for immediate medical attention.

Types of plague

There are three basic forms of plague:

Bubonic plague

The most common form of plague is bubonic plague. It’s usually contracted when an infected rodent or flea bites you. In very rare cases, you can get the bacteria from material that has come into contact with an infected person.

Bubonic plague infects your lymphatic system (a part of the immune system), causing inflammation in your lymph nodes. Untreated, it can move into the blood (causing septicemic plague) or to the lungs (causing pneumonic plague).

Septicemic plague

When the bacteria enter the bloodstream directly and multiply there, it’s known as septicemic plague. When they’re left untreated, both bubonic and pneumonic plague can lead to septicemic plague.

Pneumonic plague

When the bacteria spread to or first infect the lungs, it’s known as pneumonic plague — the most lethal form of the disease. When someone with pneumonic plague coughs, the bacteria from their lungs are expelled into the air. Other people who breathe that air can also develop this highly contagious form of plague, which can lead to an epidemic.

Pneumonic plague is the only form of the plague that can be transmitted from person to person.

How plague spreads

People usually get plague through the bite of fleas that have previously fed on infected animals like mice, rats, rabbits, squirrels, chipmunks, and prairie dogs. It can also be spread through direct contact with an infected person or animal or by eating an infected animal.

Plague can also spread through scratches or bites of infected domestic catsTrusted Source.

It’s rare for bubonic plague or septicemic plague to spread from one human to another.

Explanation:

8 0
3 years ago
How do I solve this problem help me plzz
Dmitry_Shevchenko [17]

Answer:

What is the problem... nothing is listed??

Explanation:

7 0
2 years ago
Read 2 more answers
What is the relationship among genes, chromosomes, and DNA?
horsena [70]
Chromosomes makes up genes while genes and chromosomes make up the entirety of DNA. A living organism inherits 46 chromosomes, 23 from each parent. These chromosomes are not genes but they form genes, which are just the traits of an individual that are unique. DNA is the entire make up of an organism that controls everything about a person such as likelihood to have disease or their physical appearance.

please vote my answer brainliest. thanks!
4 0
3 years ago
The length of bamboo grows much faster than that of thickness why?​
iren [92.7K]

Using a slow- and fast-growing variant of bamboo, Wei and colleagues looked at cell division, growth, and gene expression (through transcriptomics, which measures all the genes being expressed by an individual) to discover which genes may be responsible for fast growth in bamboo. They found that the slow-growing variant had reduced expression of genes relating to cell wall construction, the plant hormone auxin (important for cell growth and cell division), and had irregular cell growth and cell walls. Wei and colleagues suggest that a reduced ability to produce and perceive auxin, combined with a weakened cell wall, are responsible for the slow growth seen in the bamboo variant.

3 0
2 years ago
If the membrane potential at the axon hillock becomes subthreshold an action potential will be fired.
kotegsom [21]
True bc it’s True !!!!
8 0
3 years ago
Other questions:
  • Select which statements are a part of natural selection. select all that apply
    12·2 answers
  • Using the Mohs standard hardness scale, which of the following scratch tests is correct?
    14·1 answer
  • Adequate intake of which nutrient has been shown to reduce the risk of neural tube birth defects?
    10·1 answer
  • 70 year-old female patient presents with a complaint of right knee pain with weight bearing activities. she is also developing p
    6·1 answer
  • What is notable about phenotype in incomplete dominance
    6·1 answer
  • Why does ecology need to study the biotic and abiotic elements?
    5·2 answers
  • What is respiration​
    13·2 answers
  • WILL MARK BRAINLIEST! In some plants, the pistils don’t form until a few days after the stamens do. How might this keep a plant
    10·1 answer
  • State the role of mitosis in growth of living organism
    12·1 answer
  • What would happen to the liquid levels in the glass tube ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!