What organisms apart from algae would have needed to be present to remove carbon dioxide from the early atmosphere?

Consider the Sun and Earth as a single system. How does the law of conservation of energy apply to this system? A) The energy from the Sun that reaches Earth is destroyed by Earth.

If carbon has an atomic number of 6, how many neutrons does carbon 12 have

Which of the following best describes the internal layering of Jupiter, from the center outward? A) Core of rock and metal; mantle of lower density rock; upper layer of gaseous hydrogen; cloud layerB) Solid rock core;

Electrical wire with a diameter of. 5 cm is wound on a spool with a radius of 30 cm and a height of 24 cm. a) Through how many radians must the spool be turned to wrap one even layer of wire? b) What is the length of this wound wire?

A ball thrown horizontall at 22.2 m/s from the roof of a building lands 36.0m from the base of the building. How tall is the building?

An object is dropped from rest from a certain height. Air resistance is negligible. After falling a distance, d, the object's kinetic energy is proportional to which of the following? (A) 1/d (B)  d (C) d (D) d2

Where are the female reproductive organs of a flower found? Question 26 options: in the stamen in the roots in the pistil in the petals

What type of craft should be used for orienteering in the water?

Majority floor leaders hold considerable power due mainly to the fact that a. they are the most popular leaders. b. presiding officers choose them. c. the majority party has more seats than the other party has. d.

Light enters an equilateral triangle prism in a direction parallel to one side. The prism is made of glass with an index of refraction of 1.52. What is the angle between the incoming ray and the ray that leaves the prism on the other side?