2. Show the diagrammatic representation of alternate source of energy.
3. Can you tell how do leguminous plant help in maintaining soil fertility?
4. Make a chart for a research project on gravitational force.
(a) Compare the gravitational force on other planets with the gravitational force
on the Earth.
(b) Write about how you think life would be without the gravitational force and
effects of gravitational force on your body.
5. In a science fiction movie, a spaceship explodes. The people in a nearby
spaceship see the explosion, but do not hear it. Is this correct? Explain.
Answers
i am doing 3 only
leguminous plants help maintain soil fertility as they contain root nodules which contain rhizobium bacteria that can fix into nitrogenous compounds to make the soil fertile
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3) The plant supplies Rhizobium with sugars and Rhizobium gives the plantsoluble nitrogen. Different crops aregrown in the same field which helpsprevent soil erosion and controls the spread of soil-borne plant disease.Leguminous plants will add nitrate tothe soil which improves fertility.
4 a) Earth-9.807 m/s^2
Moon-0.1624g
Mercury- 0.378g
Venus-0.9g
Mark -0.378g
Ceres -0.02845g
Jupiter-2.528g
Saturn-1.065g
Uranus-0.904g
Neptune -1.137g
Sun- 27.94g
b)Earth itself would most likely break apart into chunks and float off into space.
Without gravity, the forces acting on mechano-sensitive ion channels are imbalanced, causing abnormal movements of ions. Ions regulate many cellular activities; if they’re not going where they should when they should, the work of the cells goes haywire. Protein synthesis and cellular metabolism are disrupted.
5)Sound needs something to travel through to get from one place to another. In the space, since there is no air, sound cannot travel above the surface. So, there are no sounds in the space.
The space has no air because its gravity is too weak to hold an atmosphere. Hence, if an enemy spaceship exploded 'they will not hear anything as there is no medium for sound to travel, but they can see the explosion because light can travel through space as light needs no medium to travel.
Yes .
Hope it helps
Mark as branliest..
