Yes, they can.
A core doctrine for Catholics is transubstantiation, which holds that at the moment of consecration the host becomes the actual body of Our Lord Jesus Christ.So for a Catholic receiving the Eucharist is a physical union with the Body of the Redeemer, a true Communion (communion originally meant a joining together of two things previously distinct).
Yes
with catholics coming together to do rituals
Catholics do not pray through the priest. The priest prays and the congregation responds. Or the priest and the congregation pray together.
Christianity(Catholics, Protestants, Orthodox together) and Islam.
Communion invitatiins can be sent out any time the parents or guardians want their kid to do it. It's a special time. They usally have a big get together or a big dinner when they do this.
Typically the contents of a priests communion set would be a crucifix, a container for holy water, a rosary and a pouch to easily carry the set around together.
Both ways of receiving the Eucharist are acceptable for Catholics. It is up to the individual Catholic to choose. Receiving the Eucharist directly into the mouth is the more traditional way whereas in the hands is newer. The real question comes down to whether or not the Catholic is comfortable in touching the Eucharist or feels that by taking the Eucharist by hand they would prevent the spread of diseases. Traditional Catholics argue that disease in any form is impossible to spread via the holy bread. However, to increase the popularity of receiving the Eucharist, it was determined that to allow communion to be administered by hand is acceptable. This is as long as the Catholic has properly cleaned their hands and forms a hand-over-hand cup-like throne to place the body of Christ upon. Another reason cited is that by receiving communion by hand decreases the chance the host would be accidentally dropped. A third way which you might see rarely is when the Eucharistic minister dips the host in the precious blood and then places it directly in the mouth. This is called by 'intinction'. This is actually dates to pre-Vatican II as a means to receive both the body and blood of Christ together.
The Eucharist is Holy Communion. Communion means a coming together in celebration with each other and Jesus Christ. Eucharist is in "remembrance of" Christ.
The communion of saints is the spiritual solidarity which binds together the faithful on earth, the souls in purgatory, and the saints in heaven in the organic unity of the same mystical body under Christ its head.
Sex before marriage is prohibited by the catholic church.
Because in every Eucharistic celebration (mass) all the people in the area are going together with heir family in the church to celebrate the holy mass.