Silk was valuable because it was very hard to acquire and it was easy to transport because it was light weight
The answer to your question is the last option: choices A and B.
Answer:
1. Nararapat lamang na itapon natin ang basura sa tama nitong kalalagyan upang di maduming tingnan ang ating kapaligiran at upang malayo tayo sa mga sakit kapag itoy nagkalat dahil sa ulan.
2. Sa aking palagay nararapat na ding itigil ang pagputol ng mga puno upang di makalbo ang kagubatan na siyang tahanan ng mga hayop at upang walang gaanong pinsala o baha pag dumating ang bagyo.
3. Karapat-dapat na ding itigil ang planta dahil ang usok nito ay nakadagdag ng polusyon sa hangin at higit pa nakakasira sa ating ozone layer.
4. Nararapat na ding hinay-hinayin ang pagdami ng tao dahil isa din itong suliranin sa ating pangkapaligiran ang pagdami ng populasyon ng tao.
5. Bilang tao nararapat tayong maging responsable sa hakbang na ating gagawin pag-isipan nating maigi kung ito ba'y nakakatulong o nakakasama sa kapaligiran na siyang dahilan ng pagkaubos ng ating likas na yaman.
ctto.
Neuroscientist have discovered a mechanism that contributes to the strengthening of associations, also called synapses.
<h3>What are synapses?</h3>
A synapse is a physical component of the nervous system that enables a neuron (or nerve cell) to transmit an electrical or chemical signal to an additional neuron or to the intended effector cell.
The transfer of nerve impulses from one neuron to another requires synapses. Synapses are the way by which neurons, which are specialized to convey messages to specific target cells, accomplish this. The plasma membrane of the target (postsynaptic) cell and the plasma membrane of the signal-passing neuron are in close proximity at a synapse. The large arrays of molecular machinery that link the two membranes and carry out the signaling process are present at both the presynaptic and postsynaptic locations. Many synapses have an axon for the presynaptic component and a dendrite or soma for the postsynaptic component. Additionally, astrocytes communicate with synaptic neurons, responding to synaptic activity to control neurotransmission.
To know more about synapses, visit:
brainly.com/question/27381250
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<span>It is very important to practice firearm safety whenever you own a firearm. You should check your barrel frequently to see if there is an obstruction. If you have an obstruction in your firearm, you should make sure your firearm is unloaded before using a cleaning rod to remove any obstruction. After using the cleaning rod, check the barrel again to make sure that all of the obstruction has been removed before reloading your firearm.</span>
