Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
Answer:
C. Inorganic Fertilizers
Explanation:
No inorganic fertilizers on earth contain cycle participating carbon. The only carbon containing fertilizer is organic Urea (NH2CONH2). This is because plants are never deficient in organic carbon availability. The inorganic fertilizers only deal with their mineral need and that;s why they don't participate in carbon cycle.
No,not all organs are weighed on a triple beam balance.
<u>Explanation:</u>
- Usually smaller sized organs like adrenals, thyroid are commonly used to be weighed on triple beam balance, whereas larger organs like lungs, liver and heart can only be weighed on grocer's scale.
- Only weight of the smaller body organs can be measured very precisely with the help of triple beam balance, where as if we measure the weight of the larger organs using the same triple beam balance,then the resultant value thus obtained will not be accurate enough.
- Hence organs are weighed on a triple beam balance.
