What did the invention of the microscope make it possible for scientists to do? A. create new types of cells B. examine and describe cells C. copy genetic material D. develop unique chemicals

Increase of greenhouse gases, due to human activity, is melting sea ice at the poles. This causes changes in climate.

Which statement about sponges is NOT true? Sponges lack true tissues. Sponges actively pump water through their bodies to eat, breathe, and excrete. Sponges are filter feeders. Sponges are aquatic. Adult sponges are mobile, non-sessile animals.

What do two sugar isomers have in common

Which of the following is not a type of trade barrier? A. a tariff B. a quota C. a patent D. an embargo

What happens yo axcess carbohydrates in animals A:they are stored as fat B:they are stored as protein C:they are stored as starch D:they are stored as sugar

Describe how a person can count the rate if beating of the left ventricle.

All animals that swim freely in the ocean are known as ... ?

Cell structure responsible for excretion of cell waste

Which trophic level contains the organisms that are source of all chemical energy used in an ecosystem

What is the largest latitude one can reach