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
blondinia [14]
3 years ago
13

Question 2 The solid portion of Earth is made up of oxygen and this element is _____.

Biology
1 answer:
jarptica [38.1K]3 years ago
6 0

Explanation:

Tarbuck, Earth's crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; sodium, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent

About 29% of Earth's surface is land consisting of continents and islands. The remaining 71% is covered with water, mostly by oceans but also lakes, rivers and other fresh water, which all together constitute the hydrosphere.

...

Earth.

Almost 99% of the minerals making up the Earth's crust are made up of just eight elements. Most of these elements are found combined with other elements as compounds.

You might be interested in
what are the morphological chemical function and similarities different between lysosomes and peroxisome​
bearhunter [10]

Answer/explanation:

Differences: lysosomes have digestive enzymes (hydrolases) that break substances to be digested into small molecules; peroxisomes contain enzymes that degrade mainly long-chained fatty acids and amino acids and that inactivate toxic agents including ethanol; within peroxisomes there is the enzyme catalase, responsibal

5 0
3 years ago
A liquid's resistance to flow is called<br> viscosity.<br> Odensity<br> O pressure.<br> O tension.
gregori [183]

Answer:

Viscosity

Explanation:

Ive had this question on quizzes many times. And viscosity was the answer.

8 0
3 years ago
Approximately how much of earths surface is covered by land
vekshin1
The approximately number of earths surface is covered by land is 29 percent
3 0
3 years ago
What is an antigen? Antibody?
Burka [1]

Answer:

Explanation:

Antibodies are proteins manufactured by the body that help fight against foreign substances called antigens.

Antigens are any substance that stimulates the immune system to produce antibodies. Antigens can be bacteria, viruses, or fungi that cause infection and disease

5 0
3 years ago
Ecosystems can change over time because of physical processes or
Snezhnost [94]

Answer:

Human activities

Explanation:

Because humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

6 0
3 years ago
Other questions:
  • List two animals or plants that have adaptations that allow them to survive in their environment. What are thoes adaptations? Ho
    5·1 answer
  • Which of the following is true about natural selection?
    9·1 answer
  • Sugars such as glucose, fructose, and ribose are examples of ________________.
    5·2 answers
  • Explain why increased ecosystem diversity contribute to increased biodiversity in the biosphere
    6·1 answer
  • Plants make energy. Some of it they use to perform the necessary functions of living. What do they do with any excess energy?
    6·1 answer
  • Which of these CORRECTLY explains one difference between the processes of photosynthesis and respiration?
    15·2 answers
  • 1. How did Hubble determine that the Universe is expanding?
    13·1 answer
  • What do the variables in the Hardy-Weinberg equation represent?
    9·1 answer
  • Please help <br>is it currently possible to take a core sample?<br>​
    5·1 answer
  • Please help. I will get a worse grade if I don't pass this, thanks. Question in photo below.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!