Water is the compound. Iodine and calcium are elements, and air is a mixture
The correct answer to this question is this one: they lacked oxygen. The earliest organisms were completely heterotrophic in nature because of the reason that they lacked oxygen. <span>A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. </span>
One should consider: proper clothing and shoes-so not to get injured. Knowledge of equipment and activity—one should know how to use all equipment and know how to play the games/activity so not to hurt themselves or others. Proper hydration and nutrition before hand-so not to get dehydrated or dizzy or sick and safety og equipment and location-check for broken items and discard, check environment for hills, holes, sticks, traffic, etc.
Answer:
Socialization is the process by which human begin to acquire the skills necessary to perform as a functioning member of their society.
It's advantages are:-
Mental Health.
Confidence and self-esteem. ...
Increased quality of life.
Reduced blood pressure.
Reduced risk of Alzheimer's.
Boost immunity and other physical health benefits.
Increased brain health.
Promotes purpose.
<h2>And Happy bithday jamila!!</h2>
Answer: SECONDARY CELL WALL.
Explanation: When cell wall grow,it becomes thickened,then it further deposits new layers of a different material (different from that of the primary cell wall) from where secondary cell wall is formed.
This secondary cell wall is made up of cellulose,hemicellulose,and lignin.
They function in providing additional strength,support, rigidity to cells and the larger plant.
