Answer the following question given this paragraph: 43.7 Organogenesis and Vertebrate Formation Organogenesis is the formation of organs from the germ layers. Each germ layer gives rise to specific tissue types. The first stage is the formation of the neural system in the ectoderm. The mesoderm gives rise to somites and the notochord. Formation of vertebrate axis is another important developmental stage. Q: What is the formation of organs from the germ layers called? Choices: - photosynthesis - synaptogenesis - biosynthesis - organogenesis A:
organogenesis
(Question)
Answer the following question given this paragraph: Most crustaceans have separate sexes, so they reproduce sexually using eggs and sperm. Many land crustaceans, such as the Christmas Island red crab, mate every season and return to the sea to release the eggs. Others, such as woodlice, lay their eggs on land when the environment is damp. In some crustaceans, the females keep the eggs until they hatch into free-swimming larvae. Q: Most crustaceans have separate sexes, so they reproduce sexually using what? Choices: - pod and eggs - eggs and pod - asexual reproduction - eggs and sperm A:
(Answer)
eggs and sperm
Ques: Answer the following question given this paragraph: Igneous rocks cool from magma. The appearance of the rock is created by the composition of the magma. It is also determined by the rate that the magma cools. If the magma cools deep underground, it cools slowly. If the magma cools at or very near the surface, it cools quickly. This results in two different rock types. The rock types can be told apart by the size of their crystals. The size of the crystals creates the texture of the rock. Q: What is igneous rock created from? Choices: - magma aging - volcanic ash - carbon dioxide - magma cooling A:
Ans: magma cooling
(Q).
Answer the following question given this paragraph: The nuclei of radioisotopes are unstable, so they constantly decay and emit radiation. Q: The nuclei of radioisotopes are unstable, so they constantly decay and emit what? Choices: - moisture - acid - chemicals - radiation A:
(A).
radiation
Ques:Answer the following question given this paragraph: When hydrogen gas is reacted with oxygen gas, water is formed as the product. Q: Water is formed from oxygen and what other element? Choices: - calcium - helium - lead - hydrogen A:

Ans:hydrogen
Answer the following question given this paragraph: The cardiovascular system is made up of the heart, the blood vessels, and the blood. Q: The heart, blood vessels, and blood make up which system in the body? Choices: - digestive - pulminary - respiratory - cardiovascular A:
cardiovascular