These leaves grow horizontally, so that the majority of photosynthetic cells are facing upwards and receiving light in the day for photosynthesis. The majority of stomata are found on the lower half so that transpiration does not increase during the day. Dorsiventral leaves can either be 1) simple, consisting of one leave or 2) compound, consisting of many leaves stemming from the same petiole.
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..