(i) Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle. (ii) These substances keep the environment clean.
(i) Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle.
(ii) These substances keep the environment clean.
The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism.
The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism.
Some approaches towards the conservation of forests are: 1. Conversion of forests into national parks, sanctuaries. 2. To take help of local people in conserving forest. 3. Not to allow the destruction of forests for making roads, dams and hotels etc. 4. Planting of trees should be increased.
Some approaches towards the conservation of forests are:
1. Conversion of forests into national parks, sanctuaries.
2. To take help of local people in conserving forest.
3. Not to allow the destruction of forests for making roads, dams and hotels etc.
4. Planting of trees should be increased.
We should conserve forests because they are essential for us in the following terms: 1. Forest provide us with oxygen, they cause rainfall. 2. Forest prevents soil erosion. 3. Plants are dependent on animals and birds for their pollination and seed dispersal. 4. Forests provide us with various medicRead more
We should conserve forests because they are essential for us in the following terms:
1. Forest provide us with oxygen, they cause rainfall.
2. Forest prevents soil erosion.
3. Plants are dependent on animals and birds for their pollination and seed dispersal.
4. Forests provide us with various medicines.
The purpose of reflex action is to provide quick response in situations where the organism does not have enough time to think. Reflex arcs are formed in the spinal cord, although the information inputs also reach the brain. This helps the brain to record this event and remember it for future use.
The purpose of reflex action is to provide quick response in situations where the organism does not have enough time to think. Reflex arcs are formed in the spinal cord, although the information inputs also reach the brain. This helps the brain to record this event and remember it for future use.
At first, the smell of the incense stick reaches our nose, then the olfactory receptors present in our nose detect it. Then the receptors send this information to the forebrain in the form of electrical signals. Then the forebrain interprets this information as the smell of incense stick where it isRead more
At first, the smell of the incense stick reaches our nose, then the olfactory receptors present in our nose detect it. Then the receptors send this information to the forebrain in the form of electrical signals. Then the forebrain interprets this information as the smell of incense stick where it is already stored.
The part of the brain responsible for maintaining posture and equilibrium of the body is the Cerebellum. This part of the brain appears to be a separate structure, distinct from the rest of the brain. It is located right below the cerebrum, the largest part of the brain.
The part of the brain responsible for maintaining posture and equilibrium of the body is the Cerebellum. This part of the brain appears to be a separate structure, distinct from the rest of the brain. It is located right below the cerebrum, the largest part of the brain.
At a synapse, one neuron sends a message to a target neuron another cell. Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.
At a synapse, one neuron sends a message to a target neuron another cell. Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.
A reflex action is an involuntary action which is a rapid and automatic response to stimuli. Walking is a voluntary action, which requires our thinking and is within our control.
A reflex action is an involuntary action which is a rapid and automatic response to stimuli.
Walking is a voluntary action, which requires our thinking and is within our control.
Variations are important for species survival because variation causes the organism to overcome extreme situations. Organism species occupy well-defined positions in the ecosystem, utilizing their reproductive capacity.
Variations are important for species survival because variation causes the organism to overcome extreme situations. Organism species occupy well-defined positions in the ecosystem, utilizing their reproductive capacity.
Give any two ways in which biodegradable substances would affect the environment.
(i) Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle. (ii) These substances keep the environment clean.
(i) Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle.
See less(ii) These substances keep the environment clean.
Why are some substances biodegradable and some non-biodegradable?
The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism.
The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism.
See lessSuggest some approaches towards the conservation of forests.
Some approaches towards the conservation of forests are: 1. Conversion of forests into national parks, sanctuaries. 2. To take help of local people in conserving forest. 3. Not to allow the destruction of forests for making roads, dams and hotels etc. 4. Planting of trees should be increased.
Some approaches towards the conservation of forests are:
See less1. Conversion of forests into national parks, sanctuaries.
2. To take help of local people in conserving forest.
3. Not to allow the destruction of forests for making roads, dams and hotels etc.
4. Planting of trees should be increased.
Why should we conserve forests and wildlife?
We should conserve forests because they are essential for us in the following terms: 1. Forest provide us with oxygen, they cause rainfall. 2. Forest prevents soil erosion. 3. Plants are dependent on animals and birds for their pollination and seed dispersal. 4. Forests provide us with various medicRead more
We should conserve forests because they are essential for us in the following terms:
1. Forest provide us with oxygen, they cause rainfall.
See less2. Forest prevents soil erosion.
3. Plants are dependent on animals and birds for their pollination and seed dispersal.
4. Forests provide us with various medicines.
What is the role of the brain in reflex action?
The purpose of reflex action is to provide quick response in situations where the organism does not have enough time to think. Reflex arcs are formed in the spinal cord, although the information inputs also reach the brain. This helps the brain to record this event and remember it for future use.
The purpose of reflex action is to provide quick response in situations where the organism does not have enough time to think. Reflex arcs are formed in the spinal cord, although the information inputs also reach the brain. This helps the brain to record this event and remember it for future use.
See lessHow do we detect the smell of an agarbatti (incense stick)?
At first, the smell of the incense stick reaches our nose, then the olfactory receptors present in our nose detect it. Then the receptors send this information to the forebrain in the form of electrical signals. Then the forebrain interprets this information as the smell of incense stick where it isRead more
At first, the smell of the incense stick reaches our nose, then the olfactory receptors present in our nose detect it. Then the receptors send this information to the forebrain in the form of electrical signals. Then the forebrain interprets this information as the smell of incense stick where it is already stored.
See lessWhich part of the brain maintains posture and equilibrium of the body?
The part of the brain responsible for maintaining posture and equilibrium of the body is the Cerebellum. This part of the brain appears to be a separate structure, distinct from the rest of the brain. It is located right below the cerebrum, the largest part of the brain.
The part of the brain responsible for maintaining posture and equilibrium of the body is the Cerebellum. This part of the brain appears to be a separate structure, distinct from the rest of the brain. It is located right below the cerebrum, the largest part of the brain.
See lessWhat happens at the synapse between two neurons?
At a synapse, one neuron sends a message to a target neuron another cell. Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.
At a synapse, one neuron sends a message to a target neuron another cell. Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.
See lessWhat is the difference between a reflex action and walking?
A reflex action is an involuntary action which is a rapid and automatic response to stimuli. Walking is a voluntary action, which requires our thinking and is within our control.
A reflex action is an involuntary action which is a rapid and automatic response to stimuli.
See lessWalking is a voluntary action, which requires our thinking and is within our control.
Why is variation beneficial to the species but not necessarily for the individual?
Variations are important for species survival because variation causes the organism to overcome extreme situations. Organism species occupy well-defined positions in the ecosystem, utilizing their reproductive capacity.
Variations are important for species survival because variation causes the organism to overcome extreme situations. Organism species occupy well-defined positions in the ecosystem, utilizing their reproductive capacity.
See less