Answer:
The correct answer is - B. disruptive selection.
Explanation:
Adaptive radiation is a type of genetic drift that relatively fast evolution of many species from a single common ancestor which means there is a big drift in a very small time.
Disruptive selection is a type of natural selection that shows phenotypes (individuals with groups of traits) of both extremes but has very few individuals in the middle. An example of this type is the evolution of mammals after the extinction of dinnosaurs.
Answer:
because they reduce interspecific competition
Explanation:
Narrower niches are known to be more specific and limited compared to broader niches, which are generally less specific and less limited. The species that live in broad niches are named generalists because they are able to withstand different conditions. A narrow niche is often correlated with reduced overlap and thus tends to reduce interspecific competition. For example, coral reefs consist of a wide variety of species (including anemones, sea sponges, sea fans, brain corals, etc) which have narrow niches, thus showing high biodiversity.
Answer:
Step 1: A tree absorbs the carbon from the atmosphere into its leaves for photosynthesis.
Step 2: A caterpillar gets the carbon by eating the tree's leaves.
Step 3: A bird gets the carbon by eating the caterpillar.
Step 4: The bird flies into a building and dies instantly. It falls to the ground.
Step 5: The bird decomposes and the carbon returns to the atmosphere.
Answer:
蛋白质合成的场所只能是核糖体 在核糖体上合成的蛋白质会被转送到内质网进行进一步的加工 包括折叠、组装和糖基化等一系列的过程。最终再经过高尔基体的加工和包装 进行分泌
在内质网上的操作仅仅是加工而已 使蛋白质产生三级四级结构，但是合成的过程（脱水缩合）一定是在核糖体上的。
Explanation:
