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
agasfer [191]
2 years ago
10

1. The primary source of energy in most ecosystems is/are

Biology
2 answers:
andrey2020 [161]2 years ago
7 0

Answer:

B. the sun

B. prairie cordgrass

A. Around 10% of the energy is transferred to support the next trophic level.

C. tertiary consumers

D. wolves

Explanation:

I just did it.

Levart [38]2 years ago
5 0

Answer:

Hmmm

Explanation:

You might be interested in
- When will an absorption line will appear in a spectrum?
Tatiana [17]
An absorption line will appear in a spectrum if an absorbing material is placed between a source and the observer.
5 0
3 years ago
The CNS is vulnerable. There are several systems and structures in place which protect these vital tissues. How is the brain and
V125BC [204]

Answer:

1) Skull and Vertebral column

2) Meninges

3) Cerebrospinal fluid.

Explanation:

Central Nervous system:

CNS is the abbreviation of Central Nervous system. CNS controls the whole body functions so it is the most important component of the body. CNS consist of two parts 1) Brain and 2) Spinal cord

Both of these organs are very important and hence need to be protected. Nature provided these organs with certain protective mechanisms these includes

1) Skull and Vertebral column:

Skull is present around brain and vertebral column is present around spinal cord. These structure provides mechanical support to soft parts of CNS.

2) Meninges:

These are the membranes that provide antiseptic environment to the brain and hence protect it from microbes and other harmful substances.

3) Cerebrospinal fluid:

This fluid is present inside meninges which nourishes the brain and protect it from mechanical stresses.

5 0
3 years ago
Arrange the order of events for the internalization of LDL particles into cells:
ElenaW [278]

Answer:

The correct answer is "5-1-3-2-4".

Explanation:

Internalization of LDL particles into cells, is needed to form the intracellular vesicles known as endosomes. The order of events that allow for this process are:

5) LDL receptors migrate to the cell surface and cluster in clathrin-coated pits. Clathrin acts directing the receptors to the cell membrane region where endosomes are formed.

1) A combination of cholesterol and apolipoprotein binds to LDL receptors and becomes internalized as endocytotic vesicles. Once the receptors are in the proper cell membrane region, cholesterol and apolipoprotein are bound and internalized.

3) Several endocytotic vesicles fuse to form an endosome.

2) The environment of the endosome becomes acidic, which causes the LDL to dissociate from its receptor; additionally, the endosome fuses with a lysosome. LDL should be dissociated from its receptor since it is going to be degraded in the following step.

4) The LDL particle is degraded by the lysosome. This takes place after endocytosis, when LDL particles are transported into lysosomes once they are fused, cleaving the cholesterol esters into cholesterol and fatty acids.

6 0
3 years ago
In the periodic table, Groups are_____ columns.
AnnZ [28]

Answer:

Vertical

Explanation:

Biology class :)

8 0
2 years ago
A biodiversity hotspot is a region that has lost at least
aleksandrvk [35]

Answer:

diversity throughout all living organisms

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which summary below correctly describes what occurs during transcription?
    7·2 answers
  • A tRNA molecule has an ____ ____ at the top and an _____ at the bottom
    14·1 answer
  • HELPPPP!!!! Changes in ecosystems can be attributed to natural causes, such as natural disasters, seasonal variations
    15·1 answer
  • In both of these biomes, the life forms or biosphere, are limited greatly by the interaction or lack of interaction with another
    10·2 answers
  • If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?
    9·1 answer
  • Which factors can prevent permanent fixation of an allele (i.e. maintain genetic diversity)? Hint: You're going to have to try d
    7·1 answer
  • Which of the following is not true about renewable energy sources?
    9·1 answer
  • A type of landscape in rainy regions where caverns ,sinkholes,and deep valleys are common called​
    6·1 answer
  • 3. A family rented a pontoon and cruised across the lake at 15 mph for 1.85 hours. How many
    5·1 answer
  • Plsss help me Asap!!!!​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!