Answer:
We live in an era of unprecedented road and highway expansion — an era in which many of the world’s last tropical wildernesses, from the Amazon to Borneo to the Congo Basin, have been penetrated by roads. This surge in road building is being driven not only by national plans for infrastructure expansion, but by industrial timber, oil, gas, and mineral projects in the tropics.
Few areas are unaffected. Brazil is currently building 7,500 kilometers of new paved highways that crisscross the Amazon basin. Three major new highways are cutting across the towering Andes mountains, providing a direct link for timber and agricultural exports from the Amazon to resource-hungry Pacific Rim nations, such as China. And in the Congo basin, a recent satellite study found a burgeoning network of more than 50,000 kilometers of new logging roads. These are but a small sample of the vast number of new tropical roads, which inevitably open up previously intact tropical forests to a host of extractive and economic activities.
Explanation:
<h2>
Hey There!</h2><h2>
_____________________________________</h2><h2>
Answer:</h2><h2>_____________________________________</h2>
Class Crustacea belongs to the Phylum Arthropoda. It is a class itself thus it does not have any subphylum.
<h2>_____________________________________ </h2>
Phylums are the groups and Phylum arthropoda is one of the 33 phylas of the Kingdom Animalia. Phylum Arthropoda has the largest phylum of the Animal Kingdom with variety of animals that include one million species. It has 5 classes.
- Class Merostomata
- Class Arachnida
- Class Crustacea
- Class Myriapoda
- Class Insecta
<h2>_____________________________________</h2>
- They are usually aquatic both marine and freshwater.
- Exoskeleton is hard and made up of chitin called carapace.
- Body is divisible into head, thorax and abdomen. Some animals have cephalothorax.
- Cephalothorax regions are formed by the fusion of head and thorax
- Head bears two pairs of antenna, one pair of mandible, two compound eyes with stalk.
- Respiration takes place by gills or through body surface
- Excretion is carried out by one pair of antennary glands or green glands.
- The thorax and abdomenal appendages may be modified for swimming, feeding, walking, resperation as well as reproduction.
- Sexes are separate
- Dimorphism is prominent
- Five walking legs for locomotion are present.
- Example: 1)free living are, Daphnia, Cyclops, Argulus, Sacculina, Prawn Crabs etc.
2)Parasite are, Barnacles and Sacculina.
3) Marine are Shrimps, Lobsters etc.
4) Sedentary crustaceans are Barnacle(Parasite), Prawns(Fresh-water living) etc.
<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />
Answer:
Meiosis
Explanation:
Meiosis, becose of the two parts of meiosis the parent cell is divided twice creating four cells called gametes
Mitosis create two identical daughter cells and is for all other body cells except for gametes (sex cells)
fertilization results in a new organism
Black hair because a phenotype is physical characteristics of an organism.
In this case, the two species have coevolved by modifying behavioral traits (moths) and physiological traits (bats).
<h3>What is coevolution?</h3>
Coevolution is a particular type of evolution where a selective pressure imposed by one species serves to generate an adaptive change in another species and vice-versa.
Coevolution is fundamental in predator-prey relationships and leads to the emergence of new traits that are selected by natural selection.
In conclusion, the two species above have coevolved by modifying behavioral traits (moths) and physiological traits (bats).
Learn more about coevolution here:
brainly.com/question/1489642
#SPJ1
