A trilobite. Trilobites became extinct about 250 million years ago while a ammonite became extinct around the same time as dinosaurs(65 million years ago). You wouldn't find a human skull or a dinosaur footprint
Answer:
Masks are a simple barrier to help prevent your respiratory droplets from reaching others. Studies show that masks reduce the spray of droplets when worn over the nose and mouth.
Explanation:
Answer:
1. Purines
2. States that DNA composition varies among species
3. Hydrogen Bond
4. Purines
<em>Answer to #2 is a little iffy </em>-- sorry
Explanation:
Pyrmidines have two rings
Purines have one ring
Complementary bases are connected by hydrogen bonds.
Answer:
2. It is converted into heat and energy.
Explanation:
So every time an animal eats grass, or another animal it receives 10% of the energy that the previous animal/plant had. If a rabbit ate a carrot, 10 percent of the energy the carrot had in it, will go into the rabbit. the question is asking where the 90% energy from the eaten carrot went.
Answer Explanation:
Most of the energy that isn't stored in the animal/plant is lost as heat or is used up by the body as it digests the animal/plant that was eaten. This is because the animals who consume any of the plants/animals receiving the 10% energy take energy to eat the plant/animal. this takes up the other 90%
I hope this helps :))
