To apply a new waterproofing membrane on top of an old bitumen waterproofing membrane, the surface of the old membrane should be thoroughly cleaned and prepared. Any loose debris, dirt, or old adhesive should be removed to ensure proper adhesion of the new membrane. Once the surface is clean, a primer should be applied to promote adhesion between the old and new membranes. Finally, the new waterproofing membrane can be installed according to the manufacturer's instructions, ensuring that it is properly sealed and bonded to the old membrane to provide effective waterproofing. **

A utility knife or a sharp blade is typically used to cut the waterproofing membrane. It is important to use a sharp tool to ensure clean and precise cuts, which will help in achieving a proper seal and prevent water leakage. Care should be taken to avoid damaging the underlying surface while cutting the membrane. **

Speakers may not properly reproduce bass because the size and design of the speaker may not be optimized for low-frequency sound reproduction. Additionally, the power and quality of the amplifier driving the speaker may not be sufficient to accurately reproduce bass frequencies. The membrane may flutter when trying to reproduce bass because it is unable to move with the necessary control and precision at low frequencies, leading to distortion and a lack of clarity in the sound. **

Ideally, the waterproofing membrane should be applied in dry weather to ensure proper adhesion and effectiveness. If the membrane is applied and then it rains before it has fully cured, it can compromise its ability to create a watertight seal. Water exposure during the curing process can lead to delamination, reduced adhesion, and potential leaks. Therefore, it is best to apply the waterproofing membrane when there is no rain in the forecast and allow it to fully cure before any water exposure. **

A bass membrane needs to be large in order to reproduce low tones because low frequency sounds have longer wavelengths. A larger membrane is able to move more air and produce the necessary pressure changes to accurately reproduce these longer wavelengths. This allows the bass membrane to effectively reproduce the deep, low tones that are characteristic of bass frequencies. A smaller membrane would not be able to displace enough air to accurately reproduce these low frequency sounds. **

Mollys reproduce through sexual reproduction, with the male fertilizing the female's eggs internally. The female will then give birth to live young after a gestation period of about 4 weeks. Mollys are known to be prolific breeders, with a single female capable of producing multiple batches of fry throughout her lifetime. It is important to provide adequate hiding places for the fry to ensure their survival in a community tank. **

Fish reproduce through a process called spawning, where the female releases eggs and the male releases sperm into the water. The eggs are then fertilized externally, and the embryos develop outside the mother's body. Some fish species exhibit parental care, where one or both parents protect the eggs and young fish. After hatching, the young fish go through various stages of development before reaching adulthood. **

Ligers, which are a hybrid cross between a male lion and a female tiger, typically cannot reproduce because they often inherit a mix of conflicting genes from their parents. These genetic differences can lead to various health issues, including infertility. Additionally, ligers are usually born with certain physical abnormalities that can further complicate their ability to reproduce. Due to these factors, ligers are generally unable to produce offspring of their own. **