16        response = requests.get(url)
17        return response.json()
18
19    def submit_transaction(self, transaction):20        url = f"{self.base_url}/transactions"
21        headers = {"Content-Type": "application/json"}
22        response = requests.post(url, json=transaction, headers=headers)

11        response = requests.get(url)
12        return response.json()
13
14    def get_payment_history(self, account_id, limit=20):15        url = f"{self.base_url}/accounts/{account_id}/payments?limit={limit}"
16        response = requests.get(url)
17        return response.json()

 6        self.network = network
 7        self.base_url = f"https://horizon-{self.network}.stellar.org"
 8
 9    def get_account_info(self, account_id):10        url = f"{self.base_url}/accounts/{account_id}"
11        response = requests.get(url)
12        return response.json()

23        if self.waste_storage >= 1:
24            print("Waste storage is full.")
25
26    def update_supply_levels(self, oxygen_rate, water_rate, food_rate, waste_rate):27        self.consume_resources(oxygen_rate, water_rate, food_rate)
28        self.produce_waste(waste_rate)
29        self.check_supply_levels()

13    def produce_waste(self, waste_rate):
14        self.waste_storage += waste_rate
15
16    def check_supply_levels(self):17        if self.oxygen_supply <= 0:
18            print("Oxygen supply is low.")
19        if self.water_supply <= 0: