A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
Amphibolite is a foliated metamorphic rock composed principally of ... What platy, parallel, mineral grains are the most visual aspect of foliated .
Explanation:
Butterflies are central pollinators to many agricultural crops, their ecological function is also a food source to predators like birds, spiders, lizards and other animals. Butterfly's beauty is like a flower, which displays attraction wherever it flies.
Sugar ants prefer honeydew from aphids and protect aphids from other predators to ensure the safety of their food source. These insects also feed on: Nectar and also Plant-eating invertebrates such as caterpillars.
Answer:
Pepsinogen is a powerful and abundant protein digestive enzyme secreted by the gastric chief cells as a proenzyme and then converted by gastric acid in the gastric lumen to the active enzyme pepsin.
Explanation:
The role of pepsin and its precursor in protein digestion was first described in the 19th century.
A runaway greenhouse effect is a process in which a net positive feedback between surface temperature and atmospheric opacity increases the strength of the greenhouse effect on a planet until its oceans boil away. An example of this is believed to have happened in the early history of Venus.
