A. Migration (birds migraye to warmer climates during colder months)
Half life is the time taken by a radioactive isotope to decay by half of its original mass. In this case the half life of carbon-14 is 5500 years.
The original mass is 30 g and the new mass is 3.75 g.
New mass = Original mass × (1/2)^n, where n is the number of half lives;
3.75 = 30 × (1/2)^n
1/8 = (1/2)^n
n = 3
Thus, the time taken will be; 3 × 5500 = 16500 years.
Answer: Bacteria producing oxygen for the oxygenation of the earth's atmosphere.
Explanation: ????????? NOT FOR SURE
Answer: the ozone is helpful since it blocks dangerous rays from the sun, and it helps circulate the climate (Letting of heat). To much ozone may be a pretty though becoming it would take away to many rays and leave us cold
Explanation:
I don’t really know but you could use some of this information and do it better lol
Answer:
a mycorrhiza
Explanation:
Mycorrhizae are mutualistic associations that occur between fungi and the roots of most vascular plants, which are those that have sap-carrying vessels.
Fungi increase the nutrient absorption capacity of plants while providing sugars and amino acids essential for the existence of fungi. That is, both (fungi and plants) are mutually beneficial. This is because fungi nourish plants and they, in turn, during photosynthesis produce carbohydrates that are assimilated by the fungi.
Mycorrhizae absorb nutrients from the soil and transmit them to plants. In this way, plants absorb water and mineral salts more easily and are therefore able to develop better and resist disease as well as climate change.
