Please help asap!!
Pick the correct statement.
• elements and compounds are pure substances because their atoms are chemically combined.
•elements and comppunds are pure shbstances because they can be easily seperated.
•parts of a heterogeneous mixture can’t be seperated.
•parts of a homogeneous mixture are evenly mixed.

Aboy with an extra x chromosome probably has which of the following syndromes?

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.