Meteorites are composed of the original material Form which earth was formed. Their compositions range from metallic meteorites made of iron and nickel to stony meteorites composed of dense rock like peridotite.
<span>(2) increased exposure to ultraviolet light. The ozone layer protects us from UV light.</span>
Answer:
water-vascular system
Explanation:
Echinoderms exhibit several unique features and the presence of a water vascular system is one of them. The water vascular system of these organisms consists of a network of fluid-filled canals and chambers. The marine water enters and exits the system through an opening. This system functions as a hydrostatic skeleton during locomotion.
Tube feet of these organisms are filled with fluid as water enters into them via the canals of the water vascular system lead to them. This inflates the tube feet and serve in locomotion. The water entering through the water vascular system also brings in dissolved oxygen and food particles into the body.
This can be analyzed through molecular and DNA analysis.When fossils are examined, it should be thorough. Thus, certain anatomical indicators and DNA sequences are observed to describe the overall organism before it died. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
Answer:
The correct answer is - mutualism.
Explanation:
Like it is given here, The coral gives a protected environment for algae and other compounds algae required for photosynthesis. Photosynthesis performed by the algae provides a byproduct of microscopic algae.
These algae produce oxygen and help the coral to remove wastes and algae is important to the survival of the coral animals, which use the energy to extract calcium from the seawater and build their calcareous skeletons.