An organ which regulates buoyancy who one answer this question I'll give her or him answer as brainlist answer it's my promise
but u have to answer it in 20 seconds

Invasive species are one of the major threats to biodiversity. these species multiply quickly and compete with native species for food, sunlight, spac and other resources. on the map, determine the area where native species will have limited resources available to them due to invasion threat from invasive species threat very low low medium high very high

What is the next step in muscle contraction after the actin changes shape? (apex)

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?