An indicator species is an organism whose presence, absence or abundance reflects a specific environmental condition. Indicator species can signal a change in the biological condition of a particular ecosystem, and thus may be used as a proxy to diagnose the health of an ecosystem.
The answer is a, medial. Medial means toward the midline (or middle) of the body. The heart is closer to the midline of the body in comparison to the shoulder.
true
while this may be true second hand smoke is far deadlier then directly smoking they have been mixed with nicotine and chemicals you would find to clean windows with etc such as appliance cleaners etc
plz mark brainlist if i helped
<span>All cardiovascular diseases are caused by poor lifestyle choices is false. While it may be true that causes of cardiovascular diseases are poor lifestyle such as smoking, alcohol and poor diet. Not all can arise from this.
</span>Hormones are <span>chemicals secreted and regulated by the endocrine system is true. Hormones are chemicals which help the body function properly and of course, maintained by our endocrine system.</span>
