It's the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.
<span>b. gravel on the bottom of the aquarium</span>
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system. <span>
</span>
Biotic factors:
Plants
Microorganisms
Macroorganisms
Answer:
C. To confirm that the alternative fuel is cleaner than fuels currently used
Explanation:
The current fuels from mining, cutting down trees and even transportation is bad for the atmosphere. These fuels cause climate change which could potentially bring a lot of dangers. The reason scientists would conduct research on a newly alternative fuel is so that the fuel would be a lot more cleaner which could prevent the dangers that are to come.
Explanation:
during photosynthesis, carbon dioxide and water are taken in by the autotrophs and energy is produced in the form of glucose, which is stored in plants in the form of another moleculecalled as sucrose. Know that oxygen is just a byproduct thus formed after photosynthesis.
during aerobic repiration oxygen and glucose are consumed to give energy as in ATP, adenosine triphosphate, and water. and carbon dioxide is a waste product
Replicated chromosomes finish moving towards the poles in Anaphase stage of Mitosis.
<u>Explanation:</u>
The mitosis is the process of cell division producing daughter cells which are identical and has the same number of chromosomes in each as the parent cell.
There are four stages of mitosis, including, Prophase, the initial phase where the cell is being prepared for the mitosis. Next is the Metaphase, second phase, where the replication or duplication of chromosome takes place.
Third in line is the Anaphase, where the duplicated chromosome is pulled on the sides by the centrosome spindle fibres which let the chromosome move and this phase ends with the finishing of shift or move.
Then is the Telophase, fourth and the last phase, when the division has been completed with the two daughter cell out of one parent cell with identical results.
