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
sergejj [24]
2 years ago
13

What 3 elements make up most of the mass of living organisms?

Biology
1 answer:
lisabon 2012 [21]2 years ago
6 0
Carbon hydrogen oxygen
You might be interested in
How does a mutation affect a gene? A. A mutation changes the sequence of DNA bases in a gene. B. A mutation creates the sequence
snow_tiger [21]
A. is the correct answer bc a mutation changes the DNA.
3 0
3 years ago
Read 2 more answers
What act as a root in the pteridophytes ​
ra1l [238]

Answer:

The root system is always adventitious. The stem is either underground or aerial. The leaves may be microphylls or megaphylls. Their other common characteristics include vascular plant apomorphies (e.g., vascular tissue) and land plant plesiomorphies (e.g., spore dispersal and the absence of seeds).

Explanation:

3 0
2 years ago
Read 2 more answers
When acid comes into contact with calcite, the acid bubbles. How can geologists use acid to confirm that the rock towers are mad
Brrunno [24]
By pouring acid on the rock.
7 0
3 years ago
Describe the structure of alveolus which is known as tha breating organ.
Dovator [93]
The alveolus (singular form) or alveoli (plural form) are tiny sacs of organs that are attached to the ends of the alveolar duct. These tiny sacs of air are clumped together that form interconnected caves, working together as a unit. They are found inside the lungs and they make the exchange of air easy and possible. Alveoli units are responsible for putting oxygen into the air that we breathe in. Blood that passes through the heart and into the lungs are converted into oxygen which will be then transported by the blood all over the body systems.  
<span>
The walls of the alveoli are extremely thin to enable the quick exchange of gases Aside from this, the linings of alveoli units are fluid in nature enabling gases to dissolve.  </span>
5 0
3 years ago
How do the characteristics of shale change with increased pressure and temperature?
dalvyx [7]

Answer: Shale changes into Slate.

Explanation:

Shale is a sedimentary rock, formed by the deposition and compression of clay and silt.

Shale layers is buried deep into the earth through the process of deposition (i.e the laying down of rock forming material by natural entities like glaciers, wind, and water).

Temperatures and pressures rise greatly because the shale’s layers are buried. When the temperatures and pressures become higher. The shale is changed into a metamorphic rock (with dark brown streak), called Slate.

8 0
3 years ago
Other questions:
  • Which type of ecosystem is most likely to be characterized by thick, rich soils?
    9·2 answers
  • Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own f
    7·2 answers
  • When a beaver senses danger, it slaps its tail on the water. How does this help the beavers?
    7·2 answers
  • Includes parenchyma, collenchyma, and sclerenchyma
    15·1 answer
  • When individuals leave a population, the remaining populations will likely experience a _________ in genetic diversity.?
    13·2 answers
  • What causes lactic acid to build up in muscle cells? A. The cells receive excess oxygen than the body takes in. B. Cells use oxy
    11·1 answer
  • Compare the palisade layer and the spongy layer of the mesophyll. Of the two layer, which layer has more cells?
    15·1 answer
  • Which is most likely to change with new discoveries and technologies?
    13·2 answers
  • The genome of D. melanogaster consists of approximately 1.7 * 108 base pairs. DNA synthesis occurs at a rate of 30 base pairs pe
    7·1 answer
  • How can you determine if a bacterium is being killed by an antibiotic or if its growth is simply being inhibited
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!