The answer is 'cooler'. The Cretaceous Period was relatively warm and was experiencing global warming. However, a cooling trend was evident towards the end of the Cretaceous. The Paleocene followed the meteorite impact that resulted in the extinction of most of the dinosaurs. It is thought that dust particles in the atmosphere resulted in cooling during the early Paleocene.
<em><u>-If no oxygen is present, what process happens during cellular respiration?
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If no oxygen is present, cells can only utilize glycolysis to make ATP. Cells without mitochondria can only utilize glycolsis. Glycolysis couples with fermentation to produce ATP. Cellular respiration is the process cells use to make energy. Cells in our body combine glucose and oxygen to make ATP and carbon dioxide. Thus why oxygen is to be present during cellular respiration.
<u><em>-Describe the process of photosynthesis. What are the products and the reactants?
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The products is glucose, and the reactants are ATP, NADPH, co2 the of photosynthesis carbon dioxide water. These are the products of photosynthesis glucose and oxygen.
Reactants:
- Carbon dioxide
- Water
- Sunlight
Products:
- Glucose
- Oxygen
<span>Red blood cells normally have a biconcave shape (picture a donut, but instead of a hole through the centre there's just a downward slope to the centre of the cell). If the cell takes on water, it will increase in size and the sloped areas will start to flatten out. If the cell loses water, it will begin to shrivel. Use these observations and your understanding of osmosis to answer the question!</span>
Answer:
Explanation: New experimental data can lead to a better understanding of theories or can even disprove them.