Take earthworms as an example to talk about the relationship between biology and environment.

Earthworms can secrete mucus on the body surface, so that they can breathe deep in the soil and reduce the resistance when walking in the soil.

Earthworms have bristles on the ventral surface, which can support the body in the soil, thus making the muscles contract and relax, which is conducive to peristalsis in the soil.

Earthworms have a layer of cuticle on their body surface, which can avoid scratching their bodies when crawling in the soil and play a protective role.

Earthworms can automatically repair wounds and generate new unnecessary organs, which can increase the chances of survival.

Earthworms are hermaphroditic, so it is easier to produce offspring.

When observing.

Through the anatomy and observation of earthworms, students can grasp the important morphological characteristics of annelids from the perceptual point of view. For example, when animals evolve into annelids, the body appears segmented and develops a true cavity; Because of the well-developed eukaryotic cavity, annelids have relatively developed organ systems. At the same time, through observation and dissection, we can understand that the morphological structure and function of animals are unified, and learn to dissect invertebrates with tools and general dissection methods.

Biology and environment are a unified and inseparable whole. Environment can affect living things, living things adapt to the environment, and at the same time, it constantly affects the environment, just like "water can carry a boat, but it can also overturn it." For example, cactus living in the desert, due to the lack of water in this environment, cactus leaves become thorns, which also shows that cactus can adapt to the environment. Living things can affect the environment, such as transpiration of terrestrial plants, which is an adaptation to land life; But at the same time, terrestrial plants can lose a lot of water into the atmosphere during transpiration, increase air humidity and adjust climate.

The best example of biological impact on the environment is the Loess Plateau, which used to be a vast forest and endless grassland. However, due to some reasons, vegetation has been destroyed, resulting in serious soil erosion and imbalance of ecological balance, leading to excessive sediment in the Yellow River and Loess Plateau ... There should be many such examples. ...

So we should protect living things, especially vegetation. ...

Let's all start from our side ... and defend our beautiful earth home together. ...