Q: The passenger pigeon, the dodo bird, and the woolly mammoth represent individual cases of what fate? Read this paragraph and choose the correct option from the provided answers: 47.2 | The Importance of Biodiversity to Human Life By the end of this section, you will be able to: Identify chemical diversity benefits to humans Identify biodiversity components that support human agriculture Describe ecosystem services It may not be clear why biologists are concerned about biodiversity loss. When biodiversity loss is thought of as the extinction of the passenger pigeon, the dodo bird, and even the woolly mammoth, the loss may appear to be an emotional one. But is the loss practically important for the welfare of the human species? From the perspective of evolution and ecology, the loss of a particular individual species is unimportant (however, the loss of a keystone species can lead to ecological disaster). Extinction is a normal part of macroevolution. But the accelerated extinction rate means the loss of tens of thousands of species within our lifetimes, and it is likely to have dramatic effects on human welfare through the collapse of ecosystems and in added costs to maintain food production, clean air and water, and human health. Agriculture began after early hunter-gatherer societies first settled in one place and heavily modified their immediate environment. This cultural transition has made it difficult for humans to recognize their dependence on undomesticated living things on the planet. Biologists recognize the human species is embedded in ecosystems and is dependent on them,. Choices: - isolation - compression - accumulation - extinction A:
extinction

Q: What is beneath the cerebrum and includes the thalamus and hypothalamus? Read this paragraph and choose the correct option from the provided answers: Diencephalon The diencephalon is beneath the cerebrum and includes the thalamus and hypothalamus. In the somatic nervous system, the thalamus is an important relay for communication between the cerebrum and the rest of the nervous system. The hypothalamus has both somatic and autonomic functions. In addition, the hypothalamus communicates with the limbic system, which controls emotions and memory functions. Sensory input to the thalamus comes from most of the special senses and ascending somatosensory tracts. Each sensory system is relayed through a particular nucleus in the thalamus. The thalamus is a required transfer point for most sensory tracts that reach the cerebral cortex, where conscious sensory perception begins. The one exception to this rule is the olfactory system. The olfactory tract axons from the olfactory bulb project directly to the cerebral cortex, along with the limbic system and hypothalamus. The thalamus is a collection of several nuclei that can be categorized into three anatomical groups. White matter running through the thalamus defines the three major regions of the thalamus, which are an anterior nucleus, a medial nucleus, and a lateral group of nuclei. The anterior nucleus serves as a relay between the hypothalamus and the emotion and memoryproducing limbic system. The medial nuclei serve as a relay for information from the limbic system and basal ganglia to the cerebral cortex. This allows memory creation during learning, but also determines alertness. The special and somatic senses connect to the lateral nuclei, where their information is relayed to the appropriate sensory cortex of the cerebrum. Choices: - rendalen - brain stem - subvocalization - diencephalon A:
diencephalon

Q: What is the latin name for mercury? Read this paragraph and choose the correct option from the provided answers: In this image, you see small pools of elemental mercury. The Latin name for mercury is hydrargyrum, a compound word meaning "water-silver" (hydr- = water, -argyros = silver), since it is liquid like water but shiny like silver. Mercury is the only pure metal that exists as a liquid at room temperature. Choices: - trichina - stibium - spirogyra - hydrargyrum A:
hydrargyrum

Q: What is another name for trisomy 21? Read this paragraph and choose the correct option from the provided answers: Choices: - cystic fibrosis - Tay-Sachs Disease - Fragile X - down syndrome A:
down syndrome