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Nimfa-mama [501]
3 years ago
11

What is the definition of the earth's crust

Biology
2 answers:
andrew-mc [135]3 years ago
8 0

Answer:

“Crust” describes the outermost shell of a terrestrial planet.

Earth's crust is generally divided into older, thicker continental crust and younger, denser oceanic crust. Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals.

melamori03 [73]3 years ago
5 0
Isent it like the mantle
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Chromists reproduction
Verdich [7]

The eukaryotic kingdom known known as Chromista is composed of single celled organisms among which of all the algae containing chlorophyll a and c. Most of the species belonging to this group are also photosynthetic.

Due to the vast number of species, some Chromistas have an asexual reproduction, whereas other reproduce sexually.  

Asexual reproduction is achieved by the process of cellular division known as mitosis in which a parent cell divides into two identical daughter cells.

Sexual reproduction occurs through flagellated zoospores. Male gamets are produced by the antheridia, the male sex organ of algae, ferns, fungi etc. The haploid female gamets are produced through mitosis in oogonia. The joining of two gamets is called syngamy.

7 0
3 years ago
A preganglionic sympathetic nerve cell, with an axon terminal in the superior cervical ganglion, that releases acetylcholine ont
givi [52]

Answer:

neurotransmission

Explanation:

  • When the nerve impulses are transmitted from one neuron to another or from one neuron to a muscle, then such a type of signalling is known as neurotransmission.
  • When neurotransmission occurs between two nerves, then the neurons communicate by release a neurotransmitter into the synapse between the two neurons.
  • The neurotransmitters are released by the axon terminals from the presynaptic neuron and they bind onto the dendrites of the postsynaptic neurons.
  • Therefore, in the given example the release of acetylcholine (neurotransmitter) from the preganglionic nerve cell onto the postganglionic nerve cell is an example of neurotransmission.
5 0
3 years ago
Determine which of the following choices is the best match for the questions that follow: A. Whole-organism Vaccine B. Subunit V
Elza [17]

Answer:

Experimental Vaccine Herpes Vaccine = D

Attenuated = B

Purified macromolecule Vaccine = B

Recombinant-Vector Vaccine  = A

Inactivated or Killed = C

Diphtheria Vaccine = A

Explanation:

A Vaccine is an organic arrangement that gives dynamic obtained invulnerability to a specific irresistible infection. A Vaccine ordinarily contains a specialist that takes after a sickness causing microorganism and is frequently produced using debilitated or executed types of the organism, its poisons, or one of its surface proteins. The specialist invigorates the body's safe framework to perceive the specialist as a danger, pulverize it, and to additionally perceive and decimate any of the microorganisms related with that specialist that it might experience later on.

Vaccines can be prophylactic (to forestall or enhance the impacts of a future contamination by a characteristic or "wild" microorganism), or therapeutic (to battle a sickness that has just happened, for example, cancer).

The administration of Vaccine is called vaccination. vaccination is the best strategy for forestalling irresistible sicknesses

6 0
3 years ago
Why are solid particles required for cloud formation?
viktelen [127]
The vapor rises until it reaches a low enough temperature and pressure to condense water vapor into water droplets and form a cloud. When vapor condenses into liquid or solid particles, it loses some of its energy to the air.
Hope this helps
3 0
4 years ago
Read 2 more answers
How does the spread of viruses differ between plants and animals?
Gwar [14]

Answer:

Explanation:

Plants and animals have completely different strucutres on their physique and everything. so the spread of viruses can be completely different from eachother.

Hope this helps!

7 0
3 years ago
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