Which of the following statements is true about chemical elements in an ecosystem?
They recycle within the ecosystem, being constantly reused.
You might also like to view...
The organisms that cause pneumococcal pneumonia are rarely found as a part of the normal flora of healthy adults
Indicate whether the statement is true or false.
This phylum of vascular, seed-bearing plants has about 185 known living species. Many of them look
like palm trees, and some produce massive strobili. Their male and female strobili are found on separate plants.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
Which group of Agnathan does not possess any sign of rudimentary vertebrae or vertebral column?
1.Conodonts 2.Hagfishes 3.Lampreys 4.Ostracoderms
_______ of a neuron is when the inside of the membrane becomes less negative relative to the outside.
Fill in the blank(s) with the appropriate word(s).