When does the cell have to use active transport ?

Answer:

A: in the atmosphere

Explanation:

• As the air is a mixture of gases and the air is continuously in motion as the water molecules are then evaporated or quickly get concentrated and condense and hence they get transformed very quickly thus for the least amount of time the water molecule is present in the air.

• The air current picks and drops the molecules to far and distance off place and hence they tend to remove the molecules or shift them from one place to another.

Answer:

The correct answer would be C) respiratory system.

Respiratory system is made up of set of organs which help in taking in oxygen and expelling out carbon dioxide from the body.

In humans, it is composed of nose, pharynx, larynx, trachea, bronchi, pair of lungs, and diaphragm.

Alveoli (in lungs) are the site of gaseous exchange where oxygen is exchange with carbon dioxide.

Carbon dioxide is the toxic waste product of cellular respiration. Circulatory system helps in transporting CO₂ from cells to the alveolar site where it is exchanged with oxygen and excreted out as a part of exhaled air.

Answer: C

Explanation: got it right

Answer:

I think its true!

Explanation:

i hope im right haha...

GOODLUCK GUYSS

The reason why Koala bears are restricted to live in a certain habitat is because they can only eat a certain type of eucalyptus leaf. These bears are indigenous to Australia. They are nocturnal and live in tropical where temperate eucalyptus forest can be found.

Answer:

Only eat a certain type of eucalyptus leaf

Explanation:

Koala bear are found in restricted geographical regions only since they eat only certain type of eucalyptus leaves. Koala bear prefer a habitat rich in eucalyptus trees and receiving adequate rainfall. The leaves of eucalyptus trees are rich in water which is essential for Koala bear. They are found in coastal islands and inland woodlands that are habitat for eucalyptus species as preferred by Koala bears.

The statement is - True.

The Tasmanian tiger went extinct because of the extensive hunting by the new settlers. People were killing the Tasmanian tiger because they thought that it is the animal responsible for the killing of the livestock, but at the end it turned out that they made a huge mistake and that actually the feral dogs and the dingo were the ones responsible for that. The last Tasmanian tiger was a female and died in captivity under very bad conditions.

Even though people use the term Tasmanian tiger (because of the stripes) and Tasmanian wolf (because of the dog-like face), it is an animal that is not related with neither the cats nor the dogs, but instead it is a marsupial, the biggest marsupial carnivore in the recent history, and its real name is Thylacine.

Answer:

Extinct species, endangered species, endangered species, threatened species, extinct species

Explanation:

Determine whether the following species are extinct, endangered, or threatened.

The Tasmanian tiger, the largest known carnivorous marsupial, was wiped out of the wild due to constant hunting:  Extinct Species

The Amur leopard is now gone from most of its original habitat due to human activity. Only twenty to thirty Amur leopards remain in the wild:  Endangered Species

Western Lowland gorilla populations have dropped sixty percent in the past twenty-five years due to poaching, habitat loss, and, mainly, disease. Their numbers are expected to keep dropping, and the species could soon disappear:  Endangered Species

The Eastern gemfish population has declined due to commercial fishing. New protection efforts seem to be helping the population slowly recover: Threatened Species  

The golden toad was forced from its breeding sites when erratic weather caused pools to dry up. No frogs have been found in over two decades: Extinct Species

These are all the answers for E2020!