The answer to the question stated above is letter b. <span> <span>a meteor or asteroid colliding with Earth
</span></span> <span>The mass extinction at the end of the Mesozoic Era was caused by </span>a meteor or asteroid colliding with Earth. This was said to happen about 65 million years ago.
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Description Sea spiders: are marine arthropods of order Pantopoda, belonging to class Pycnogonida, hence they are also called pycnogonids. They are cosmopolitan, found in oceans around the world. There are over 1300 known species, with legs ranging from 1 mm to over 70 cm.
Description Spiders: are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms.
Answer:
False
Explanation:
Ground beef labeled 75% lean could be a good choice, but that is because it contains only 25% fat, not 25% of its calories come from fat.
Answer:
Secondary consumers are organisms that eat primary consumers for energy. Primary consumers are always herbivores, or organisms that only eat autotrophic plants. However, secondary consumers can either be carnivores or omnivores. Carnivores only eat other animals, and omnivores eat both plantand animal matter. Regardless of what a secondary consumer is, it still must have primary consumers in its diet to survive.
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