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NCERT Exemplar Solutions Class 7 Science Solutions for Forests: Our Lifeline - Exercise in Chapter 17 - Forests: Our Lifeline
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State whether the following statements are true or false. If false, give the correct statement.
(a) Forests influence climate, water cycle and air quality.
(b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation.
(c) The forest keeps on growing and changing and can regenerate.
(d) Forests protect the soil from erosion.
Answer:
a) True
b) False- In a forest, trees form the uppermost layer, followed by shrubs. The herbs form the lowest layer of vegetation.
c) True
d) True
Video transcript
"hey guys welcome to lido q a video
i am vinit your leader tutor bringing
you this question on your
screen the question is
define mass of a body right
what is the si unit of mass define the
weight of a body
what is the si unit of weight what is
the relation between the mass and weight
of a body
okay now let's define each one of them
right so first we are going to
define mass so number
a
mass of a body
so mass of a body is defined
as the quantity of matter
contained in it
right the si unit
of mass is
we all know this kg right
now for weight
weight is a term that we generally use
synonymously for mass right
but weight and mass are quite different
we all know that right so
let us define weight
weight of
a body is a force
with which it is
attracted towards
the center of the earth
right the si unit of weight is
newton
and
what is the relationship between
weight and mass right the relationship
is that
weight
weight is
directly proportional
to mass and is
given by w is equal to
product of mass into force due to
gravity
acceleration due to gravity so this is
it guys
if you still have a doubt please leave a
comment below
do like the video and subscribe to our
channel i'll see you in our next video
until then bye guys keep learning"
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